Police are seeking three men following the rape of a woman outside a school during which her trousers were stolen.

The 27-year-old woman was knocked to the ground by a man before being raped outside Wallace Primary School in Elderslie, Renfrewshire, at about 8pm on February 20.

Police want to speak to three men seen near the scene, a path between Byres Road and Glenmalloch Place.

Officers have been carrying out door-to-door enquiries and examining CCTV footage in a bid to identify the attacker.

He is white, aged 35-50, was of medium to stocky build and had dark hair which was receding. He wore dark trousers and a T-shirt. His face may have been injured during the attack.

Police want to talk to three other men. The first was seen in Stoddard Square, Elderslie, at the time of the rape or about the same time on Sunday, February 19. He is 30-50 years old and was wearing dark trousers and a light top.

The second man was seen near the town's Wallace Monument, about 15 minutes after the rape. He is in his 30s, is about 5ft 10in tall and is of stocky build, clean shaven with short dark hair. He was wearing dark trousers and a parka-style jacket.

The third man was also seen near the Wallace Monument at around 1.10am on Tuesday, February 21. He was 30-40 years of age, of broad build and was wearing dark jeans, a black jacket and white trainers.

Detective inspector Louise Harvie said: "Extensive enquiries are continuing to trace whoever is responsible for this serious sexual assault.

"There are three men that officers wish to trace as they were seen in the area near to where the incident took place, and may have seen the suspect or unwittingly witnessed something vital to this investigation."

Anyone with information was urged to call police on 101, or contact Crimestoppers on 0800 555 111.