A gun, together with ammunition has been found in Crawley.
The weapon, an Automatic Victoria, was found in a wooded area off Lundy Close wrapped in a couple of bin bags.
Tests are being carried out to try and trace the owner and to find out if the gun was used in any criminal activity.
Anyone who has any information about where the gun came from, or who has seen suspicious activity in that area recently, is asked to contact Sussex Police on 101@sussex.pnn.police.uk or call 101, quoting serial 1124 of 14/08.
You can also call the independent charity Crimestoppers on 0800 555 111.