Canadian police have arrested a 17-year-old boy over the fatal shooting of a student at a school last week.
Police described the school shooting as "shocking"
A second teenager, also 17, has turned himself in. Both of the teenagers are reported to be facing murder charges.
Jordan Manners, 15, died in hospital on Wednesday after being shot at the CW Jefferys Collegiate Institute.
Local reports say the two suspects were friends of the victim. One of them is due to appear in a court in the city of Toronto later on Monday.
Toronto's police chief, Bill Blair, said the incident, which occurred in one of the city's poorer neighbourhoods, was "shocking".
"Students have a right to a safe school environment. It is shocking that such a crime could take place in our schools," he said.
The shooting was Toronto's 26th murder so far this year and the 13th involving a gun, the Globe and Mail newspaper reported.