The Saskatoon Fire Department responded to a carbon monoxide call at 5:58 p.m. Thursday in the 100 block of Horner Crescent in Saskatoon’s Evergreen neighbourhood.

When they arrived, firefighters discover one person suffering the effects from carbon monoxide. Crews put on their breathing apparatus and searched the underground parking garage locating three more patients. All patients were transported to hospital by ambulance.

Fans were set up to ventilate the underground garage. No other details are available.