Police are on the hunt for a man who committed a solo sex act in front of a woman on board a train.
The incident happened on the 5.33pm service between Glasgow Central and East Kilbride, South Lanarkshire, last Thursday, December 16.
British Transport Police said the suspect sat directly opposite the woman and then proceeded to carry out the indecent act.
He is believed to be around 50-years-old and was described as slim with short brown hair.
He was wearing dark blue jeans, a dark jacket and was carrying a backpack.
A BTP spokesperson said: “Officers are keen to speak to anyone who may have witnessed the incident to assist their enquiries.”
If you have any information, contact BTP by texting 61016 or calling 0800 40 50 40, quoting reference 538 of 16/12/21.
Alternatively, call Crimestoppers anonymously on 0800 555 111.