What started out as a quiet day at a Toronto high school has escalated into a tragedy and a lockdown, after a student was apparently shot at an indoor pool. Police received reports of what could be bullets flying at C.W. Jefferys on Sentinel Road in the Jane-Finch area around 2pm.

There are unconfirmed reports that fireworks may be involved but police haven't said anything.

When they arrived they found a teenager seriously wounded and without vital signs. The boy has been rushed to Sunnybrook Health Sciences Centre and it's not clear what his condition is, although some ambulance attendants called him 'critical'.

There's no age on the youngster or what may have provoked the violence. There have not been any arrests and it doesn't appear any weapon has been found. The school has been placed in lockdown, as authorities swarm the area looking for clues. Despite the fact dismissal time has come and gone, no one is being allowed in or out of the building.

Parents of students have arrived at the school and are shocked about what happened inside. Two people, one identified as the victim's mother, the other his sister, also rushed to the campus. The woman apparently collapsed in grief and tears when she heard the news and was taken away to accompany her son to hospital.

There are unconfirmed reports that fireworks may be involved but police haven't said anything.

"Police received reports of what could be bullets flying at C.W. Jefferys on Sentinel Road in the Jane-Finch area around 2pm."

"and it's not clear what his condition is, although some ambulance attendants called him 'critical'."