Foul play is suspected in the death of an inmate at the Shepody Healing Centre at the Dorchester Penitentiary on Friday evening, New Brunswick RCMP say.

Daniel Pépin, 44, of Quebec, was found unresponsive in his cell and later pronounced dead, Corrections Canada said Saturday. It appears Pépin was assaulted. The Shepody Healing Centre is under a total lockdown until further notice, Corrections Canada said.

The centre, which has two 20-bed psychiatric units and 10 transition beds, is Corrections Canada's regional treatment facility for the Atlantic provinces. It is located within the confines of Dorchester Penitentiary.

An autopsy was to be performed this weekend.

"No further details are being released at this time as the investigation is ongoing," the RCMP's Paul Ouellette stated.

Dorchester Penitentiary is a medium-security facility southeast of Moncton that can house 415 offenders, according to its website. The prison offers special programs and facilities, including the Shepody centre.

The penitentiary provides programs that include anger management, community integration, employability skills, sex offender rehabilitation, family violence prevention and substance abuse treatment.