KANPUR, Nov. 20 -- Four workers were found dead on Thursday morning inside a room of an oil seeds company located in the Panki industrial area (D-58, Site No. 2) in Kanpur, triggering panic across the industrial zone.

According to officials, the deceased identified as Amit Verma, 32, Sanju Singh, 22, Rahul Singh, 23, and Daud Ansari, 28 -- all residents of Taukulpur in Deoria -- were sleeping in a room on the company premises.

Officials said the police discovered that the room was locked from the inside. A metal tray filled with burning coal was recovered from the spot, prompting investigators to suspect that the men may have died due to suffocation.

A police spokesperson said, "The room was sealed on all sides, and coal had been burne...