Kelvedon shop manager foils robbery with beer can barrage, A would-be robber who threatened convenience store staff with a knife fled empty-handed after the manager began hurling cans of beer at him. The masked man went into the Nisa Store in Kelvedon Hatch, near Brentwood, Essex, at 17-15 BST on Sunday. The man ordered a female member of staff, who was dealing with a customer at the time, to open the till. The robber left after manager Aman Singh Mann began throwing cans of lager at him. Mr Mann, 29, said- I was having my break in the stock room and then I just heard a noise and someone ask the staff member to open the till for them.