POLICE are calling on witnesses to an armed robbery in St Albans in June.
About 2.35 pm on Friday 10 June, a male was approached by a man at St Albans railway station.
The mn was holding an object similar to a syringe, and demanded cash from the victim, who handed over a quantity of money to the man, who then left the station. The man is described as being Caucasian, aged in his mid 20s and was wearing a dark coloured hooded top.
Police have released images of a man whom they believe may be able to assist them in their inquiries.
