Faye Dzikewich waited in a Guelph, Ont., courtroom all day for her son's bail hearing before learning he had died four hours earlier.

Now, she's searching for answers.

Nathaniel Schofield, 36, went into medical distress while in custody at an Ontario Provincial Police (OPP) facility in Rockwood. The case now involves the province's Special Investigations Unit (SIU) — the civilian law enforcement agency investigates circumstances involving police that result in serious injury, death or allegations of sexual assault.

The SIU release said first-aid was administered before Schofield was rushed to the Guelph hospital. He was pronounced dead at 11:20 a.m., five hours before his mother got the call.

But before Dzikewich could do anything else, she was told by SIU that they needed to interview her.