A Chinese worker at Payra Power Plant in Patuakhali allegedly stabbed a fellow worker dead on Saturday night.
The deceased is Feng Lue Jun, 36, of Hunan province in China, said police, adding that they detained his roommate Sang Ziyang in connection with the killing.
Both of them were workers of Bangladesh-China Power Company Limited, police said.
Pinjur Rahman, sub-divisional engineer of the company, told The Daily Star that while having dinner, the Chinese men locked into an altercation over food. At one point, Sang Ziyang stabbed Feng Lue with a knife.
Hearing the victim scream, other workers at the dormitory went to the room and took him to Kalapara Upazila Health Complex where he died at 9:30pm, said Pinjur.
Refayat Hossain, medical officer at the hospital, said he died of excessive bleeding.
Workers in the factory caught Sang Ziyang and handed him over to police, said Md Monirul Islam, officer-in-charge of Kalapara Police Station.
The OC said they sent the body to Patuakhali General Hospital morgue for an autopsy.