We're beginning to learn more about the young brothers involved in that horrible tragedy in Dorval Monday afternoon.

The 16-year-old who was shot to death, attended Lakeside Academy in Lachine, while his 12-year-old brother goes to St-Thomas in Pointe-Claire.

The 12-year-old was charged with manslaughter and possession of a prohibited weapon.

Classmates of the teen at Lakeside tell CJAD news he was in Grade 11 and was a special needs student. 

"He was a really good friend to a lot of people at this school," says one student.

"It's just sad," says another. "He was a nice guy."

While the schools declined to comment on the situation, the Lester B. Pearson School Board says it has sent grief counsellors and psychologists to both schools. 

Meanwhile, neighbors near the Dorval home on Hamilton Place at Thorncrest, are shocked and saddened by the news. 

Neighbor Brendan Finnerty is trying to understand how something like this can happen.

"It's a tragedy, but why? That gun should have been locked up properly,' he says.

Police say charges could be brought against the 12-year-old, including involuntary manslaughter. 

The gun was owned by the family. The boys lived with their mother who was not home at the time of the tragic accident.