The bodies of late Polish President Lech Kaczynski and his wife Maria have been exhumed as part of a new investigation into the Smolensk plane crash. <br /><br /> The couple, and 94 others, were all killed six years ago. <br /><br /> Prosecutors say fresh forensic tests are needed to determine the cause of death and to check for explosives. <br /><br /> The Kaczynski’s remains were removed from their tomb in Krakow late on Monday night. Around 80 other victims will also be exhumed, sparking protests from some of the victims’ relatives.<br /><br /> Previous investigations – carried out by Poland and Russia – concluded that the 2010 crash was caused by a combination of heavy fog and pilot error. <br /><br /> But some in Poland’s ruling Law and Justice party, including Kaczynski’s twin brother Jaroslaw, have claimed the plane was brought down by an explosion, engineered by Russia.<br />
