Toronto police are investigating after numerous bomb threats were made against post-secondary campuses.

Ryerson, OCAD, and George Brown, all in Toronto are on high alert with some evacuating due to reports of bomb threats against the area.

Police say ‘numerous’ threats were made but did not say which institutions were targeted.

OCAD University said all it’s buildings have been evacuated and will remain closed until further notice.

Ryerson University initially closed its Chang school for investigation but re-opened after police gave the all clear.

Toronto Police Service has completed their investigation and given the all clear. The Chang School has re-opened.

— Ryerson University (@RyersonU) June 18, 2019

George Brown posted on their website that students will notice heavy police presence and if they see anything suspicious to call police.

Police are urging anyone who receives a threat or has information related to contact them.