Police are investigating three separate weapons incidents at Manitoba schools this week, two of which resulted in school lockdowns.

Gun call at Champlain School

A Winnipeg school was put into lockdown Wednesday afternoon after reports a gun was spotted in the area.

No one was allowed in or out of Champlain School on Church Avenue for about 30 minutes.

Police told CTV News some students reported seeing kids with a gun in the area.

Members of the Tactical Support Team responded but they did not recover a weapon.

Classes resumed just after 1:30 p.m.

Student threatens ex-girlfriend at Niverville Collegiate

RCMP used a taser to subdue a student armed with a knife who had threatened his ex-girlfriend at Niverville Collegiate on Tuesday.

At about 2:30 p.m. a female student reported that her ex-boyfriend threatened her and her family.

Officials locked down the school and called police.

At about 3:30 p.m. RCMP learned that the 17-year-old suspect had left the school armed with an "edged weapon," and had been spotted heading back to his residence.

RCMP confronted him at the residence, and say the teen was "very distraught," and threatening to kill himself.

Officers say they could not convince the suspect to drop his weapon and eventually tasered him. The youth then dropped the weapon and was taken into custody without further incident.

He has been charged with uttering threats. Further charges are pending.

Student threatened with knife in Thompson

On Monday RCMP were notified of an attempted robbery at R.D. Parker Collegiate in Thompson.

They say a male youth threatened a female student with a knife and demanded money.

The female student was not injured in the incident, and the suspect fled the scene. No charges have been laid at this time, and police are continuing to investigate.

The suspect is described as a 16 or 17-year-old male, with dark skin, about 5'8" tall, wearing a red hoodie, black track pants, and a black hat.

Anyone with information on this incident is requested to contact Thompson RCMP at (204)677-6909 or Manitoba Crime Stoppers 1-800-222-8477.