The OPP’s north eastern headquarters is now investigating an assault at the Monteith Correctional Complex in Iroquois Falls.

Staff at the jail found a 35-year-old inmate in his cell following an assault in the early morning hours of April 13th.

Police say the assault sent the inmate in hospital with serious injuries.

The OPP has made six arrests in the investigation, all of whom will remain in custody until their court date next week.