Emergency workers gather the remains of those killed in a helicopter crash in the Peruvian jungle.<br/> <br />Initial efforts to recover the bodies of seven employees of U.S.-based company Columbia Helicopters were hampered by fire.<br/> <br />Five U.S. citizens and two Peruvians were on board the helicopter when it crashed minutes after taking off from Pucallpa, about 500 miles east of Lima.<br/> <br />The pilot apparently tried to drop cargo as the chopper lost power. At least three ot those on board people were believed to have leapt from the doomed craft.<br/> <br />Columbia helicopters said it'll work with witnesses and authorities to conduct a thorough investigation into the cause of the crash.
