A man who was seen acting suspiciously near an Eastmoor park is wanted by police.
The man was watching a dog walker, before he approached them, close to the park on Eastmoor Road, just after 10am on Sunday.
He then jumped over a wall and a ran off.
He had a dark complexion and was about 5ft 8ins tall.
He was wearing a black hoodie and black jogging bottoms.
Sgt Mark Beet, of the Central neighbourhood police team, said officers are carrying out extra patrols in the area.
Anyone with any information should contact police on 101.