Officers were called shortly after 9am today (Friday) to the Tesco Express store, in Wertheim Way, after staff reported a knife-wielding robber had entered the premises. Police said it was unclear whether anything had been stolen but confirmed that nobody had been injured in the incident. A spokesman for the constabulary said: It has been reported the offender left on a silver and red mountain bike. He is described as about 5 7 to 5 8, wearing a waist-length camouflage jackets with the hood up and also a balaclava. Anyone with information is asked to contact police on 101.