Mass demonstrations against compulsory service law have been taking place as Israel’s military tries to solve its manpower shortages

A mass ultra-Orthodox Jewish rally against military conscription turned deadly in Jerusalem on Tuesday, when a teenage boy was crushed and killed after a man driving a bus hit the crowd.

The Israeli police said they detained the driver and are investigating.

Video of the scene shows a bus driving straight into a crowd of ultra-Orthodox men at the demonstration, attended by thousands. Reuters could not immediately contact the driver while in police custody and police have not released his name.

Israel’s Magen David Adom emergency services said the 18-year-old, who had been trapped under the bus, was pronounced dead on the scene.