Chung is white, 5ft 9ins tall, with a shaven head. He may be wearing a pale grey T-shirt, stone or khaki shorts, black socks and white trainers with blue markings.
He may also be carrying a purple sweatshirt and green trousers.
Chung was jailed in March last year at Liverpool crown court after a joint police and prison surveillance operation along the walls of Walton jail.
The trap was sparked by ECHO revelations about smugglers breaking into homes next to the jail to throw contraband over the walls.
Chung was jailed for six years for the drugs offence and ordered to serve the remaining 530 days of a sentence from which he had been released early.
Anyone who sees him is advised not to approach him but contact police on 0115 967 0999.
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