Police searching for the sex attacker who assaulted two girls aged 14 and 11 near the Kennet & Avon Canal in Bath on Tuesday have found the burned remains of a rugby shirt near the scene.
The shirt, which matches the description given by a witness of that worn by the attacker, was found on a path at Kensington Meadows behind Morrison's supermarket near the River Avon on Thursday July 14. The charred fabric is now being examined by forensic experts.
Detectives are keen to hear from anyone who may have seen the shirt being burnt, or who knows someone who owned a very distinctive blue, pink and grey-hooped rugby-style polo shirt with long sleeves.
The assault happened at around 4pm on Tuesday July 12, on a track between Ringswell Gardens and the Kennet and Avon canal.
The girls were walking home from school when they became aware of a man behind them. He overtook them, slowed down as he reached Grosvenor Bridge and then turned round.
He grabbed the elder girl and subjected her to what police say was a low-level but nevertheless frightening sexual assault.
The younger girl tried to pull him away, but he pushed her over.
The girls' screams were heard by two fishermen nearby who ran to help. The attacker walked and ran off the way he had come, towards the canal.
The girls were severely shaken and upset, but not physically injured.
The offender is described as white, 25-30 years old and around 5ft 10in tall. He has very short blond or fair hair and was wearing that blue, pink and grey-hooped rugby-style polo shirt with long sleeves, blue jeans and trainers.
Det Insp Charlotte Tucker of Bath CID said: "We are still appealing for people to come forward and help us with information about this serious but thankfully isolated incident."
Anyone with information should call Bath CID on 0845 456 7000.
Or call the charity Crimestoppers anonymously on 0800 555 111 or by email: www.crimestoppers-uk.org. They never ask for your name or trace your call.