diff --git a/Changes b/Changes
index cf39260..7bb037d 100644
--- a/Changes
+++ b/Changes
@@ -1,12 +1,13 @@
-0.60 2021-12-03
+0.60 2021-12-08
     - [feature] Implemented a new cache with on disk
       storage and auto-update (margaretha).
     - [feature] Support for tokenized snippet output
       (fixed #72; diewald)
     - [cleanup] Added error messages to unsupported queries in 
       SpanAttributeQuery (margaretha) 
-    - [cleanup] Cleaned up imports (margaretha)  
-
+    - [cleanup] Cleaned up imports (margaretha)
+    - Added a delete method to VirtualCorpusCache (margaretha)
+      
 0.59.6 2021-11-10
     - [bugfix] Fixed skipping of focus spans (fixed #78; margaretha,
       diewald)
diff --git a/src/main/java/de/ids_mannheim/korap/Krill.java b/src/main/java/de/ids_mannheim/korap/Krill.java
index a99624b..dc2b350 100644
--- a/src/main/java/de/ids_mannheim/korap/Krill.java
+++ b/src/main/java/de/ids_mannheim/korap/Krill.java
@@ -3,8 +3,6 @@
 import java.io.IOException;
 
 import org.apache.lucene.search.spans.SpanQuery;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
diff --git a/src/main/java/de/ids_mannheim/korap/KrillCollection.java b/src/main/java/de/ids_mannheim/korap/KrillCollection.java
index 4ec7752..14153e7 100644
--- a/src/main/java/de/ids_mannheim/korap/KrillCollection.java
+++ b/src/main/java/de/ids_mannheim/korap/KrillCollection.java
@@ -4,9 +4,6 @@
 import java.io.FileInputStream;
 import java.io.IOException;
 import java.nio.ByteBuffer;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
 import java.util.Properties;
 import java.util.Set;
 import java.util.zip.GZIPInputStream;
@@ -34,9 +31,7 @@
 import com.fasterxml.jackson.databind.ObjectMapper;
 
 import de.ids_mannheim.korap.collection.CollectionBuilder;
-import de.ids_mannheim.korap.collection.DocBits;
 import de.ids_mannheim.korap.response.Notifications;
-import de.ids_mannheim.korap.util.Fingerprinter;
 import de.ids_mannheim.korap.util.KrillProperties;
 import de.ids_mannheim.korap.util.QueryException;
 import de.ids_mannheim.korap.util.StatusCodes;
@@ -848,10 +843,7 @@
         };
         return str;
     };
-    public void storeInCache (String vcId) throws IOException, QueryException {
-        
-    }
-
+    
     @Override
     public Set<String> getAllLeafFingerprints () {
         return index.getAllLeafFingerprints();
diff --git a/src/main/java/de/ids_mannheim/korap/cache/VirtualCorpusCache.java b/src/main/java/de/ids_mannheim/korap/cache/VirtualCorpusCache.java
index 84cc29d..d506c86 100644
--- a/src/main/java/de/ids_mannheim/korap/cache/VirtualCorpusCache.java
+++ b/src/main/java/de/ids_mannheim/korap/cache/VirtualCorpusCache.java
@@ -17,10 +17,11 @@
 import org.apache.lucene.index.LeafReaderContext;
 
 import de.ids_mannheim.korap.IndexInfo;
+import de.ids_mannheim.korap.Krill;
 import de.ids_mannheim.korap.KrillIndex;
 import de.ids_mannheim.korap.collection.DocBits;
-import de.ids_mannheim.korap.collection.VirtualCorpusReferenceFilter;
-import de.ids_mannheim.korap.collection.VirtualCorpusReferenceFilter.DocBitsSupplier;
+import de.ids_mannheim.korap.collection.VirtualCorpusFilter;
+import de.ids_mannheim.korap.collection.VirtualCorpusFilter.DocBitsSupplier;
 import de.ids_mannheim.korap.util.Fingerprinter;
 import de.ids_mannheim.korap.util.QueryException;
 
@@ -64,7 +65,7 @@
         if (!dir.exists()) {
             dir.mkdirs();
         }
-        
+
         String filepath = dir + "/" + leafFingerprint;
         File f = new File(filepath);
         if (f.exists()) {
@@ -94,7 +95,7 @@
     public static void store (String vcId, KrillIndex index)
             throws QueryException, IOException {
         
-        DocBitsSupplier docBitsSupplier = new VirtualCorpusReferenceFilter(
+        DocBitsSupplier docBitsSupplier = new VirtualCorpusFilter(
                 vcId).new DocBitsSupplier();
         String leafFingerprint;
         for (LeafReaderContext context : index.reader().leaves()) {
@@ -151,12 +152,25 @@
         }
     }
 
+    public static void delete (String vcId) {
+        vcToCleanUp.remove(vcId);
+        map.remove(vcId);
+        File vc = new File(CACHE_LOCATION + "/" + vcId);
+        if (vc.exists()) {
+            for (File f : vc.listFiles()) {
+                if (f.exists()) {
+                    f.delete();
+                }
+            }
+            vc.delete();
+        }
+    }
 
     public static void reset () {
         vcToCleanUp.clear();
         map.clear();
 
-        File vcCache = new File(VirtualCorpusCache.CACHE_LOCATION + "/");
+        File vcCache = new File(CACHE_LOCATION + "/");
         for (File vc : vcCache.listFiles()) {
             for (File f : vc.listFiles()) {
                 if (f.exists()) {
@@ -168,10 +182,14 @@
         vcCache.delete();
     }
     
+
     /**
+     * Sets IndexInfo and checks if there is any VC to clean up. This
+     * method is called every time an index is used in {@link Krill}.
+     * 
      * When the VC cache knows that a leaf-fingerprint is not in the
      * map of a VC, it is marked for clean up. The cached VC will be
-     * cleaned up, next time a VC Reference is created.
+     * cleaned up, next time the index is used in {@link Krill}.
      * see {@link #getDocBits(String, String, Supplier)}
      */
     public static void setIndexInfo (IndexInfo indexInfo) {
diff --git a/src/main/java/de/ids_mannheim/korap/collection/CollectionBuilder.java b/src/main/java/de/ids_mannheim/korap/collection/CollectionBuilder.java
index 9f7e30f..166dc90 100644
--- a/src/main/java/de/ids_mannheim/korap/collection/CollectionBuilder.java
+++ b/src/main/java/de/ids_mannheim/korap/collection/CollectionBuilder.java
@@ -272,17 +272,17 @@
     public class VirtualCorpusReference implements CollectionBuilder.Interface {
         private boolean isNegative = false;
         private String vcId;
-        private VirtualCorpusReferenceFilter vcRefFilter;
+        private VirtualCorpusFilter vcFilter;
         
                 
         public VirtualCorpusReference (String vcId) {
             this.vcId = vcId;
-            vcRefFilter = new VirtualCorpusReferenceFilter(vcId);
+            vcFilter = new VirtualCorpusFilter(vcId);
 //            VirtualCorpusCache.setIndexInfo(indexInfo);
         };
 
         public Filter toFilter () throws QueryException {
-            return vcRefFilter;
+            return vcFilter;
         };
 
 
diff --git a/src/main/java/de/ids_mannheim/korap/collection/VirtualCorpusReferenceFilter.java b/src/main/java/de/ids_mannheim/korap/collection/VirtualCorpusFilter.java
similarity index 94%
rename from src/main/java/de/ids_mannheim/korap/collection/VirtualCorpusReferenceFilter.java
rename to src/main/java/de/ids_mannheim/korap/collection/VirtualCorpusFilter.java
index 2ee60bd..33c5dca 100644
--- a/src/main/java/de/ids_mannheim/korap/collection/VirtualCorpusReferenceFilter.java
+++ b/src/main/java/de/ids_mannheim/korap/collection/VirtualCorpusFilter.java
@@ -15,16 +15,16 @@
 import de.ids_mannheim.korap.util.Fingerprinter;
 import de.ids_mannheim.korap.util.QueryException;
 
-public class VirtualCorpusReferenceFilter extends Filter {
+public class VirtualCorpusFilter extends Filter {
 
     public final static Logger log = LoggerFactory
-            .getLogger(VirtualCorpusReferenceFilter.class);
+            .getLogger(VirtualCorpusFilter.class);
     public static boolean DEBUG = false;
 
     private String vcId;
     private DocBitsSupplier docBitsSupplier;
 
-    public VirtualCorpusReferenceFilter (String vcId) {
+    public VirtualCorpusFilter (String vcId) {
         this.vcId = vcId;
         docBitsSupplier = new DocBitsSupplier();
     }
diff --git a/src/main/java/de/ids_mannheim/korap/util/Fingerprinter.java b/src/main/java/de/ids_mannheim/korap/util/Fingerprinter.java
index 59113c3..e51197c 100644
--- a/src/main/java/de/ids_mannheim/korap/util/Fingerprinter.java
+++ b/src/main/java/de/ids_mannheim/korap/util/Fingerprinter.java
@@ -29,4 +29,5 @@
         return code;
 
     }
+
 }
diff --git a/src/test/java/de/ids_mannheim/korap/cache/TestVirtualCorpusCache.java b/src/test/java/de/ids_mannheim/korap/cache/TestVirtualCorpusCache.java
index bd65ab2..b456930 100644
--- a/src/test/java/de/ids_mannheim/korap/cache/TestVirtualCorpusCache.java
+++ b/src/test/java/de/ids_mannheim/korap/cache/TestVirtualCorpusCache.java
@@ -64,7 +64,8 @@
         Map<String, DocBits> docIdMap = VirtualCorpusCache.retrieve(vcId);
         assertEquals(2, docIdMap.size());
 
-        VirtualCorpusCache.reset();
+        VirtualCorpusCache.delete(vcId);
+        assertFalse(VirtualCorpusCache.contains(vcId));
     }
 
 
@@ -81,12 +82,14 @@
         Map<String, DocBits> vc1 = VirtualCorpusCache.retrieve(vcId);
         assertNotNull(vc1);
 
-        VirtualCorpusCache.reset();
+        VirtualCorpusCache.delete(vcId);
+        assertFalse(VirtualCorpusCache.contains(vcId));
     }
 
 
     @Test
     public void testUpdateCachedVC () throws IOException {
+        String vcId = "named-vc1";
         // VC cache will be marked for cleaning up 
         // because of storing a new VC
         KrillIndex ki = createIndex();
@@ -95,7 +98,7 @@
         assertEquals(27, result.getTotalResults());
 
         assertEquals(2,
-                VirtualCorpusCache.map.get("named-vc1").keySet().size());
+                VirtualCorpusCache.map.get(vcId).keySet().size());
 
         ki.delDoc(2);
         ki.commit();
@@ -110,7 +113,7 @@
         // should have the same size. But the fingerprints should be 
         // different from before the 1st cleaning up
         assertEquals(2,
-                VirtualCorpusCache.map.get("named-vc1").keySet().size());
+                VirtualCorpusCache.map.get(vcId).keySet().size());
 
         // VC cache will be cleaned up for the 2nd time 
         // resulting the same leaf-fingerprints
@@ -119,11 +122,12 @@
         assertEquals(17, result.getTotalResults());
 
         assertEquals(2,
-                VirtualCorpusCache.map.get("named-vc1").keySet().size());
+                VirtualCorpusCache.map.get(vcId).keySet().size());
 
         ki.close();
 
-        VirtualCorpusCache.reset();
+        VirtualCorpusCache.delete(vcId);
+        assertFalse(VirtualCorpusCache.contains(vcId));
     }