Ludhiana (Punjab), (PTI): Eleven people were killed after a gas leak incident in the Giaspura area in this Punjab district on Sunday, police said.

Four more people, who were taken ill, are undergoing treatment at a hospital, they added.

The source of the leakage and the type of the gas are yet to be ascertained, police said, adding that the area has been sealed while a fire brigade and an ambulance have been deployed there.