A Labadieville man has been arrested on a count of manslaughter after telling deputies he stabbed his stepgrandson after refusing the younger man’s request for cigarettes, Assumption Parish Sheriff Mike Waguespack said on Thursday.

William O. Thompson, 61, told detectives that he stabbed Daquan Rainey, 20, after Rainey became enraged when Thompson wouldn’t give him a cigarette, Waguespack said.

Thompson said that after he refused the younger man’s request, an argument ensued, which quickly escalated into a physical fight.

After he was stabbed, Rainey ran out of Thompson’s home and collapsed in the yard. The Orleans Parish Coroner’s Office reported to investigators that the knife wound severed the victim’s pulmonary artery, the Sheriff’s Office said.

Waguespack said a toxicology report on the victim is pending.

Rainey recently moved from Houma to Assumption Parish, where he moved in with relatives.

Thompson, 187 Violet St., Labadieville, was booked into the Assumption Parish Detention Center on Wednesday on one count of manslaughter.