diff --git a/discovery/gossiper_test.go b/discovery/gossiper_test.go
index 94d7d426e..ca4645ede 100644
--- a/discovery/gossiper_test.go
+++ b/discovery/gossiper_test.go
@@ -113,6 +113,17 @@ func (r *mockGraphSource) MarkZombieEdge(scid uint64) error {
 	)
 }
 
+func (r *mockGraphSource) IsZombieEdge(chanID lnwire.ShortChannelID) (bool,
+	error) {
+
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	_, ok := r.zombies[chanID.ToUint64()]
+
+	return ok, nil
+}
+
 func (r *mockGraphSource) AddEdge(info *models.ChannelEdgeInfo,
 	_ ...batch.SchedulerOption) error {
 
diff --git a/graph/builder.go b/graph/builder.go
index 8f1d4bbc0..946e9a904 100644
--- a/graph/builder.go
+++ b/graph/builder.go
@@ -1630,6 +1630,16 @@ func (b *Builder) IsKnownEdge(chanID lnwire.ShortChannelID) bool {
 	return exists || isZombie
 }
 
+// IsZombieEdge returns true if the graph source has marked the given channel ID
+// as a zombie edge.
+//
+// NOTE: This method is part of the ChannelGraphSource interface.
+func (b *Builder) IsZombieEdge(chanID lnwire.ShortChannelID) (bool, error) {
+	_, _, _, isZombie, err := b.cfg.Graph.HasChannelEdge(chanID.ToUint64())
+
+	return isZombie, err
+}
+
 // IsStaleEdgePolicy returns true if the graph source has a channel edge for
 // the passed channel ID (and flags) that have a more recent timestamp.
 //
diff --git a/graph/interfaces.go b/graph/interfaces.go
index afa0ef687..87a004d25 100644
--- a/graph/interfaces.go
+++ b/graph/interfaces.go
@@ -88,6 +88,10 @@ type ChannelGraphSource interface {
 
 	// MarkZombieEdge marks the channel with the given ID as a zombie edge.
 	MarkZombieEdge(chanID uint64) error
+
+	// IsZombieEdge returns true if the edge with the given channel ID is
+	// currently marked as a zombie edge.
+	IsZombieEdge(chanID lnwire.ShortChannelID) (bool, error)
 }
 
 // DB is an interface describing a persisted Lightning Network graph.