Toronto police are investigating after a man was seriously injured during a stabbing in the downtown core on Tuesday evening.Officers were called to the area of Church and Adelaide Streets just before 6:30 p.m.When they arrived at the scene, police found one man in his 20s with a stab wound. He was transported to a hospital with serious injuries, but non-life-threatening injuries.Police say two people were arrested at the scene.No other details were immediately available.