Police are appealing for witnesses after a woman was groped on a bus in Marsden.
A man on the 184 Manchester to Huddersfield service reached over and grabbed the woman’s breast.
Police are treating the attack on the 28-year-old woman as a sexual assault.
The attack happened at 5pm on Tuesday.
The man is described as Asian, aged 30 to 40, with black, greying hair.
He was wearing jeans and a black jacket.
It is not known where he got off the bus.
Police have appealed for anyone with information to ring Det Con Craig Foulkes on 101.
