Three people were stabbed along a stretch of a downtown Toronto street near the former Maple Leaf Gardens after police say a man "went on a bit of rampage" on Sunday morning.

Det. Phil Hibbeln said the stabbings occurred along Carlton Street, between Church and Yonge streets.

Hibbeln said it's alleged the same person is responsible for all three stabbings. A suspect was arrested on Sunday morning without incident.

The entrance to Maple Leaf Gardens is blocked off by police tape Sunday morning, following a stabbing nearby that sent at least three people to hospital. (Petar Valkov/CBC)

"These are completely unrelated attacks by this person," Hibbeln told reporters on Sunday morning.

Hibbeln said the victims suffered serious, but non-life threatening injuries.

Paramedics were called to the Church and Carlton area just before 8 a.m. They reported transporting three people to hospital. Those patients include a man in his 40s, along with a man and woman, both in their 20s. Two of the victims were later released from hospital.

The detective said it is believed the suspect "went" for a fourth person, but "wasn't successful."

The incident is still under investigation.

Hibbeln said police have spoken to witnesses, but investigators still want to hear from anyone who has information for them.

On Sunday evening, police issued a news release identifying the accused as 62-year-old Shawn O'Neill.

O'Neill faces 20 charges, including four counts of attempted murder, four counts of aggravated assault and six counts of assault with a weapon.