A bullet fired through the window of a Brampton, Ont. home struck and killed a nine-year-old boy while he was watching TV.

Kesean Williams, a Grade 4 student, was shot in the head while sitting in his living room late Wednesday night. He was rushed to Toronto’s SickKids Hospital, where he later died.

Peel Regional Police said Thursday it appears the townhouse where Williams lived with his mother and older brother was targeted, but investigators are not sure why.

“Based on the physical evidence we have, we are satisfied that the residence was targeted,” Peel police Supt. George Koekkoek said. “We’re just not sure -- and we’re working to determine -- who the actual person or persons was that the shooter was targeting.”

Investigators are looking into the possibility that the home’s previous tenants may have been the intended target.

A source told CTV Toronto that the townhouse on Ardglen Drive had “a history with police” before Kesean’s family’s moved in last week.

Koekkoek said “it’s totally unfathomable” that a young child could be killed in the comfort of his own home.

Kesean’s mom and 15-year-old brother were home at the time of the shooting, but they were not injured.

Police have questioned a number of people and are still looking for potential witnesses. They are also reviewing footage captured by surveillance cameras in the area.

Investigators have not released any information about potential suspects or the type of gun used in the shooting.

Kesean’s teachers and classmates at Sir Winston Churchill Public School remembered the boy as well-liked and funny.

The school’s flags were at half-mast on Thursday and a memorial table was set up where students and staff could place condolence notes, photos and drawings.

“(His) death is deeply felt by everyone at the school,” principal Kristin Bergen wrote in a letter to parents.

With files from CP24