Switzerland ? An armed gang of masked men raided a casino packed with about 600 guests early Sunday and made off with hundreds of thousands of dollars, according to Swiss prosecutors.

In a statement, prosecutors in Basel described a scene like an action-film heist: About 10 men dressed in black arrived in two cars at the Grand Casino near Basel shortly after 4 a.m.

One smashed the front door with a sledgehammer, and the others ran inside with machine guns and pistols, the statement said. Speaking French, a group of men ordered the guests and employees to the floor, while their accomplices emptied registers in the basement and an upper floor, it said.