<p><br /> Ten men accused of stealing around £3.5 million in a commando-style raid on a Swedish cash depot have pleaded innocent as prosecutors opened their trial with spectacular surveillance video of the brazen helicopter heist.<br /> </p><p><br /> The footage of the September 23, 2009 robbery showed three black-clad bandits leaping from the chopper and breaking into the G4S cash facility in Stockholm from the roof.<br /> </p><p><br /> They used explosives, ladders and a power cutter to access the cash as panicked employees, all unarmed, fled the building.<br /> </p><p><br /> Police have not recovered the cash and say several suspects are still at large.<br /> </p><p><br /> Five of those on trial were charged with aggravated robbery and five with complicity, in one of the largest police investigations in Swedish history.<br /> </p><p><br /> If found guilty, they could face prison terms of up to 10 years.<br /> </p>
