diff --git a/Dimob.pl b/Dimob.pl
index 52ef9cc..8819c2b 100755
--- a/Dimob.pl
+++ b/Dimob.pl
@@ -22,7 +22,7 @@ =head1 AUTHORS
 
 =head1 LAST MAINTAINED
 
-    December 16th, 2016
+    January 16th, 2019
 
 =cut
 
@@ -138,12 +138,30 @@ =head1 LAST MAINTAINED
 
     my $i = 1;
     open my $fhgd, '>', $outputfile or die "Cannot open output.txt: $!";
-    foreach my $island (@islands) {
-        my $start = $island->[0];
-        my $end = $island->[1];
-        print $fhgd "GI_$i\t$start\t$end\n";
-        $i++;
+
+    if ($outputfile =~ /\.txt$/) {
+        #legacy output
+        $logger->info("Warning: txt output is now depreciated. Support has been added to output GFF3 formatted documents. Use (any) other extension to enable GFF output. See: https://github.com/brinkmanlab/islandpath/issues/7");
+        foreach my $island (@islands) {
+            my $start = $island->[1];
+            my $end = $island->[2];
+            print $fhgd "GI_$i\t$start\t$end\n";
+            $i++;
+        }
+    } else {
+        #GFF output
+        print $fhgd "##gff-version 3\n";
+        foreach my $island (@islands) {
+            my $label = $island->[0];
+            my $start = $island->[1];
+            my $end = $island->[2];
+            my $strand = $island->[3];
+            #TODO use proper chromosome sequence id
+            print $fhgd "$label\tislandpath\tgenomic_island\t$start\t$end\t.\t$strand\t.\tID=$label\_gi$i\n";
+            $i++;
+        }
     }
+
     close $fhgd;
 
     $logger->info("Removing tmp files");
diff --git a/lib/Dimob.pm b/lib/Dimob.pm
index 423f463..5b4bede 100644
--- a/lib/Dimob.pm
+++ b/lib/Dimob.pm
@@ -224,7 +224,7 @@ sub run_dimob {
     		next;
     	}
 
-			push (@gis, [ $_->[0]{start}, $_->[-1]{end}]);
+			push (@gis, [ $_->[0]{seq_id}, $_->[0]{start}, $_->[-1]{end}, $_->[0]{strand}]);
 			#my $start = $_->[0]{start};
 			#my $end = $_->[-1]{end};		 
 			#print "$start\t$end\n";    
diff --git a/lib/Dimob/genomicislands.pm b/lib/Dimob/genomicislands.pm
index 8f5abf7..2028b8f 100644
--- a/lib/Dimob/genomicislands.pm
+++ b/lib/Dimob/genomicislands.pm
@@ -546,10 +546,15 @@ sub defline2gi {
 			my $orf_start;
 			my $orf_end;
 			my $pid;
+			my $seq_id;
+			my $strand = '.';
 #			print "$orf1\n";
-			if ( $orf1 =~ /\|:(\d+)\.\.(\d+)\)/ ) {
-				$orf_start = $1;
-				$orf_end   = $2;
+
+			if ( $orf1 =~ /.*\|([^:]*):(\d+)\.\.(\d+)\)/ ) {
+				$seq_id = $1;
+				$strand = '+';
+				$orf_start = $2;
+				$orf_end   = $3;
 				my $coordinate = "$orf_start..$orf_end";
 			 	$pid = $ptt_table_hashref->{$coordinate}->{'PID'};
 				if($extended_ids) {
@@ -559,9 +564,11 @@ sub defline2gi {
 				unless(defined($pid)){
 				    #warn "Could not find pid";
 				}
-			}elsif ( $orf1 =~ /\|:c(\d+)\.\.(\d+)\)/ ) {
-				$orf_start = $1;
-				$orf_end   = $2;
+			}elsif ( $orf1 =~ /.*\|([^:]*):c(\d+)\.\.(\d+)\)/ ) {
+				$seq_id = $1;
+				$strand = '-';
+				$orf_start = $2;
+				$orf_end   = $3;
 				my $coordinate = "$orf_start..$orf_end";
 				$pid = $ptt_table_hashref->{$coordinate}->{'PID'};
 				if($extended_ids) {
@@ -582,6 +589,8 @@ sub defline2gi {
 			#print "$orf_start and $orf_end\n";
 		
 			$orf_index->{'ORF_label'} = $pid;
+			$orf_index->{'seq_id'} = $seq_id;
+			$orf_index->{'strand'} = $strand;
 			$orf_index->{'start'}=$orf_start;
 			$orf_index->{'end'}=$orf_end;
 			push @result_orfs, $orf_index;
diff --git a/lib/GenomeUtils.pm b/lib/GenomeUtils.pm
index b213cc1..cdd6da0 100644
--- a/lib/GenomeUtils.pm
+++ b/lib/GenomeUtils.pm
@@ -344,6 +344,8 @@ sub read_and_convert {
 		# open all files
 
 		my $total_length = $seq->length();
+		my $seq_id = $seq->object_id();
+
 #		my $total_seq    = $seq->seq();
 
 		#Create fna file
@@ -418,7 +420,7 @@ sub read_and_convert {
 
 			my $strand_expand  = $strand >= 0 ? '+' : '-';
 			my $strand_expand2 = $strand >= 0 ? ''  : 'c';
-			my $desc = "\:$strand_expand2" . "$start..$end";
+			my $desc = "$seq_id\:$strand_expand2" . "$start..$end";
 
 			$desc = "ref\|$ref_accnum\|gi\|$gi\|" . $desc;