One man is in custody after Toronto police say up to five people were stabbed at an office building in the northern part of the city. 

Police say the attack happened just after 9:30 a.m. ET on the fifth floor of an office complex at 4110 Yonge St., near York Mills Avenue.

Police say between two and five people were taken to hospital with stab wounds. There is no word yet on their condition.

More to come