A masked man threatened a newsagent staff member with a knife before stealing cash in Marlow. 

The man walked into Marlow News in Newtown Road just before 9pm on January 11 and threatened a female member of staff with a knife. 

The robber made off with one of the black till drawers and ran off down Newtown Road, turning into an alleyway which leads to Willowmead Close.

He is described as a white man who was wearing a black scarf covering his face. He was wearing all black clothing and had his hood up, with a grey baseball cap underneath. He was wearing work boots and blue rubber gloves.

Investigating officer Detective Constable Aimee Summers, based at High Wycombe police station, said: "We would urge anyone who saw the offender or anyone acting suspiciously to call us as a matter of urgency via our enquiry centre number 101.

"Anyone with any concerns about the incident can speak to local officers on the same number."

If you have any information relating to this robbery, call 101 quoting reference 43180011295.