A man wearing nothing but bright green trainers grabbed a woman when she went out for a run.
The 52-year-old was jogging along the cycle track on New Quay Road towards the junction with Aldcliffe Lane, Lancaster, when she passed the man, last Wednesday, sometime between 5.30pm and 6.10pm.
He started to follow her and attempted to snatch the bum bag strapped to her waist when he caught up.
The victim managed to run away but when she looked back, the man was stood grinning at her.
The offender is described as white, aged approximately between 18 and 21-years-old with dark hair which is longer and scruffy on the top and shorter on the sides.
Det Con Mike O’Regan from Lancaster CID said: “This incident has understandably left the woman shaken and upset especially because she was out running on her own.
“If anyone has any information about this man, or thinks they have witnessed or been subject to something similar, please get in touch with us.
“I would encourage those out jogging in Lancaster to take extra precautions, such as running with a friend, sticking to routes in busier areas and only going out when it’s light. If you see anything suspicious, let us know.”
Anybody with any information can contact police on 101.