Police are searching for a man who has escaped from a West Sussex prison.
Dominic Van Allen fled Ford Prison at about 11.30am on Thursday 15 October.
The 47-year-old was serving a five-year sentence for unlawfully possessing a firearm - and police have warned the public not to approach him.
He is described as 5ft 10in and of medium build, with brown eyes and ginger cropped hair.
Since he has links to west London and north London, the Metropolitan Police is joining the hunt to trace him there.
Anyone who sees him is advised to dial 999 immediately, quoting Sussex serial 983 of 15/10, or contact the independent charity Crimestoppers anonymously on 0800 555 111 or online.