A search for a man who sexually assaulted a woman on a bus in Norwich is under way.

Police are appealing for witnesses following the incident which happened on the top deck of the X29 from Castle Meadow to Asda in Hellesdon at 4.30pm on December 9.

The female victim was sitting on the bus when a man sat down next to her.

During the journey, police said the man continually tried to touch her.

The man is white, in his late 40s to early 50s and about 5ft 10in tall.

He was wearing a waist-length beige, bomber-style coat and a blue watch.

The bus was said to be busy at the time so officers are hoping to hear from other passengers who may have witnessed what happened.

Anyone with information has been urged to contact Detective Con Christina Frost at Broadland Police Station on 101 and quote reference number 36-97139-22.

Alternatively, information can be passed anonymously to Crimestoppers on 0800 555 111.