The lockdown at Victoria Park Collegiate Institute has been lifted.
A Toronto Police Service spokesman had said earlier that the "threat is over" at the North York school.
Const. Tony Vella told CTV.ca on Wednesday that the investigation has been ended and no weapon has been recovered.
There had been a report shortly after 2 p.m. of someone in the school with a gun.
There had been no reports of shots being fired at the North York school -- located at 15 Wallingford Rd., just west of Victoria Park Ave. and Ellesmere Rd. -- and no one has been reported injured.
Police were dispatched to the scene, including the emergency task force.
Parents of the 1,400 students at the school have been asked to go to 248 Cassandra Blvd., where police have set up a staging area.
Victoria Park Collegiate is about four kilometres away from Bendale Business and Technical Institute near Midland and Lawrence Avenues in Scarborough.
On Tuesday, a shooting incident outside the school sent that institution into lockdown mode.
Police announced Wednesday that the teenager who suffered a gunshot wound to the abdomen in that incident has been charged with armed robbery. A second person has also been charged.
Police sources have told CTV.ca that it appears the victim was accidentally shot during an altercation.
A murder occurred about three kilometres away from Victoria Park Collegiate on Tuesday evening. Two men are sought in the stabbing of a 19-year-old man following an altercation at Kennedy Road near Sheppard Ave.
Two other shooting deaths occurred Tuesday, but in Malton and the Jane-Finch area.
