TORONTO - Ontario ombudsman Andre Marin says he's launching an investigation into the use of excessive force by prison guards against inmates in the province's jails.
He says he received more than 100 complaints last year from inmates who say correctional officers assaulted them.
The government watchdog says he's received more than 25 complaints in April alone.
Marin says what's even more disturbing are the allegations that the violence has been covered up or ignored.
He says his probe will look at the government response to inmate complaints, including how it conducts investigations and enforces policies on the use of force.
