Toronto police need help to identify and track down suspects who participated in a series of weekend shootings in Rexdale.

The violence began Friday night in the courtyard of a housing complex in the Mount Olive Drive and Kipling Avenue area, when at least 20 shots were fired.

Police believe that four suspects were involved and at least two of them were armed.

The police received a call about shots being fired in the complex at 6:39 p.m.

One of the victims was driven to Etobicoke General Hospital by a friend.

At 7:20 p.m., that friend was shot outside the hospital.

Supt. Ron Taverner told CBC News that "a number of bullets were fired that went into the emergency area of the hospital."

The bullets hit the windows. A full lockdown ensued.

Police ended up locking down Sunnybrook hospital as well, where the other two victims were being treated.

That same night, other shots were fired in the Martin Grove Road and Finch Avenue area. No one was injured.

Police say all three incidents are related.

Taverner said police have "plans in place to try and deal with the situation."

Police are seeking the public’s assistance to identify the people involved with the shootings.

Click on the video above to see a full report from the CBC's Ivy Cuervo.