A man has been arrested for stabbing four co-workers in an office building at 4110 Yonge St. on April 9.

Three men and one woman were stabbed around 9:30 a.m. and taken to a hospital for treatment, according to police.

Chuang Li, 47, is charged with attempted murder, aggravated assault and assault with a weapon.

He was to appear in court on April 10.