COPS investigating a rape have revealed they are looking for the victim's trousers.

They have urged the public in Elderslie to check their back gardens and bins in case the trousers have been discarded.

Their latest appeal comes as the hunt for the sex attacker steps up after he pounced on his 27-year-old victim at around 8pm on Monday, February 20 near Wallace Primary.

The victim was walking along a path between Byres Road and Glenmalloch Place when she was approached from behind by a man who struck her, causing her to fall over. 

Police say the man then subjected her to a serious sexual assault.

Detective Inspector Louise Harvie said: “As part of this ongoing investigation officers have carried out a full search of the area. 

"As a result of these enquiries it has been established that the woman’s trousers are missing. 

"Officers are therefore asking local residents in that area to check their gardens and bins for any item of discarded clothing which they don’t recognise as belonging to them.”

She added: “Officers have been carrying out extensive enquiries in the local area including door to door enquiries, and are reviewing CCTV footage from the surrounding areas.

“The man responsible must be traced and I would re-appeal to anyone with information that may assist this ongoing enquiry.  If anyone saw a man in a light-coloured t-shirt in the area around the time of the attack, or witnessed someone acting suspiciously please come forward to police.

“I am aware that this incident is concerning to the local community, however I would like to reassure them that additional officers are patrolling the area and anyone with any concerns should speak to officers.

“Anyone with information that may assist, no matter how insignificant it may seem, should contact Paisley Police Office through 101.  Alternatively please contact CRIMESTOPPERS on 0800 555 111, where information can be given anonymously.”

The man is described as white, between 35 to 50 years of age and of medium to stocky build with dark coloured hair that is receding on top.  He was wearing dark coloured trousers and a light coloured t-shirt.