A transmitter believed to be a detonator was found in the truck with Jabbar.

“Hurley gets this flare gun, and he fires the flare gun into the air with a massive detonator as a tribute to the ship,” explains Dr John Shears who led the expedition that found Endurance.

A masked fighter walks the deck of the crippled oil tanker, kneels before a collection of wires and a detonator, then presses a button.

When the gunman was found, he was carrying a remote detonator and his car contained explosives, law enforcement sources have told US media.

After he was killed, agents found homemade explosives inside his car and a remote detonator alongside his body, according to those familiar with evidence gathered in the investigation.