Johnny Brady, a 19-year-old who is serving a hospital order for a serious assault in Derby, escaped St Andrew's Healthcare facility at about 3.30pm on New Year's Eve.

Brady is described as white, 5ft 9 and slim. He was last seen wearing black Adidas tracksuit bottoms, a black hoodie, and black trainers.

Northamptonshire Police urged the public not to approach him under any circumstances.

A force spokesperson said: "We would like to appeal directly to Johnny to reassure him that he is not in trouble but to please return to St Andrew's or make yourself known to the police.

"We need to make sure you are safe and receive the care that you need.

"We would also like to appeal to members of the public to under no circumstance approach Johnny."

It comes after 43-year-old convicted sex offender Nicholas Courtney also escaped the hospital, though his escape is not thought to have been related to Brady's.

He was located and returned to the facility earlier on Sunday.

A police spokesperson said: "We're pleased to confirm that missing patient Nicholas Courtney has been located safe and returned to St Andrew's Healthcare facility in Northampton.

"Thank you for sharing our appeal, your support is appreciated as always."