Correctional Service Canada confirms an inmate at New Brunswick’s Dorchester Penitentiary has died.

Zane Weatherbee was found unresponsive in his cell on Thursday. In a statement, Correctional Service Canada said staff members performed CPR and emergency responders were called to the prison, but Weatherbee was pronounced dead.

Weatherbee was convicted of murdering a little girl in Sydney in 1982. He was a teenager at the time.

The 49-year-old had been serving an indeterminate sentence for first-degree murder since Nov. 2, 1982.

Correction Service Canada says the police and coroner have been notified and the inmate’s death is under investigation.