At least seven passengers died when a gas cylinder installed in a passenger bus exploded in Sargodha city of Pakistan on Saturday, media reports said.

The incident left more than a dozen others injured.

According to Rescue 1122, the passenger bus was on its way when a compressed natural gas cylinder installed in the bus exploded, leaving at least seven passengers, including women, dead on the spot and injuring several others, reports APP.

The area was cordoned off after the incident.

Police have launched an investigation into the incident.