ROHTAK, July 21 -- Four men, including a migrant labourer from Bihar, died after entering an abandoned well to rescue a calf in Munimpur village of Jhajjar district on Sunday night, officials said.

Police suspect they suffocated after inhaling toxic gas, and the exact cause can be ascertained only after the post-mortem examination.

The deceased were identified as Dalbir Singh (41), Narendra Singh (35), Monu Kumar (31), all residents of Munimpur village and Ram Kumar (34), a migrant labourer from Bihar.

According to police, the incident occurred around 8 pm after villagers heard cries of a calf from inside the well, estimated to be 40-50 years old. Sunil, nephew of deceased Dalbir Singh, told reporters that his uncle warned the others a...