The SIU is investigating after a woman died in a holding cell in Niagara Falls.
The NRP arrested her in the Kitchener Street and Slater Ave area Wednesday evening.
She left her cell for a tele-bail hearing yesterday afternoon and she was found unresponsive hours later.
Niagara EMS were called to the scene, and the woman was pronounced dead.
She was 24-years-old and an autopsy will be taking place in Toronto today.
The SIU has assigned two investigators and one forensic investigator to the case.
Anyone with information should contact the SIU by calling 1-800-787-8529.