A helicopter reported missing on the Joshimath-Badrinath route in Chamoli district of Uttarakhand has crashed, killing all six on board, officials said on Friday. The helicopter, which took off from Badrinath around 1:14 pm amid snowfall, lost contact near the Hathi Parvat area. The chopper crashed into a hillside near the JP Power House near Marwari Bridge around 2.20 pm, officials said.