The leader of the 400 Mawozo gang that police in Haiti say is holding 17 members of a kidnapped missionary group is seen in a video released Thursday saying he will kill them if he doesn’t get what he’s demanding.

The video posted on social media shows Wilson Joseph dressed in a blue suit, carrying a blue hat and wearing a large cross around his neck.

“I swear by thunder that if I don’t get what I’m asking for, I will put a bullet in the heads of these Americans,” he said in the video.

He also threatened Prime Minister Ariel