A search is currently underway for a man who held up the Maltapost Birkirkara Branch in Valley Road at around 12.45 p.m.
The search is being conducted by the police Mobile Squad and the Special Assignment Group.
It is understood that the man, who was wearing a white cap, was armed with a revolver but he was not hooded. He was wearing sunglasses and made off with a sum of money.
Two female Maltapost employees are currently being treated for shock.