Police are still on the lookout for a distinctive piece of jewellery that could be a key to hunting down a sex attacker in Lincoln.

It went missing during the attack between 6.30 and 7pm following the Live in Lincoln Selwyn Sounds event on Saturday night.

A 48-year-old woman was pushed off the road near North Belt.

Detective Senior Sergeant Scot Anderson is asking residents living near the corner of West Belt and North Belt to check their front yards.

"During the attack the victim's lost a gold chain bracelet with a heart shaped locket on it, which were still trying to find."

Police want to hear from the anyone who saw the victim talking to a man.

She is described as thin with a dark bob haircut - she was wearing a black straw hat, light grey dress, denim jacket and brown boots.