The incident took place on Saturday, July 11, on the Faresaver X34 Wiltshire bus from Chippenham heading towards Frome. The victim, a blind and vulnerable woman in her 70s, boarded the bus at Chippenham and alighted at Melksham. The attack took place on a bus travelling through Wiltshire (Image: Getty)"Unfortunately, there is no CCTV available and we do not have a description of the man," said a spokesperson for Wiltshire Police. Wiltshire Police officers are continuing to investigate the attack and are now urging anyone with information to come forward. Anyone with information should call 101, quoting crime reference number 54260087276, or contact Crimestoppers anonymously on 0800 555 111.