Police have warned the public not to approach an escaped sex offender who poses a “real risk” – as they issued new details about what he may be wearing.

Paul Robson, who is serving a life sentence for attempted rape and indecent assault, was reported missing from HMP North Sea Camp in Boston, Lincolnshire, on Sunday.

“He may be wearing a black long-sleeved Berghaus top, a grey ‘French’ t-shirt, dark bottoms, a dark coloured woollen beanie and a light-grey donkey-style jacket with orange on the shoulder area,” said Lincolnshire Police.

The force added: “If you do see him, please do not try to approach him, or try to apprehend him yourself.

“He poses a real risk to the public and we are doing everything in our power to find and arrest him.”

Robson was jailed for life in 2000 after he crawled into a woman’s home through her cat flap before subjecting her to a series of attacks.

He put a pillowcase over his victim’s head and held a knife to her throat during the attack in Oxford.

Robson, who already had a long history of violent sex attacks on women and young girls, was described by a judge as a “menace to females”.