Court documents from a sentencing in Toronto a decade ago detail Matthew Costain’s criminal record that began at the age of 14, arrests involving illegal guns and a history of issues with drugs.

A man accused of killing his girlfriend and her father on New Year's Eve had been wanted since 2019 for a nightclub shooting in Toronto.

Halifax Regional Police confirmed Friday that Matthew Costain, 39, who is the sole suspect in the double homicide, is the same Matthew Costain with an outstanding arrest warrant in Ontario.

Matthew Costain is shown in a Toronto Police Service handout photo released in 2019. Halifax police say the man suspected of killing a woman and her father on New Year's Eve was a fugitive wanted ...

Matthew Costain is shown in a Toronto Police Service handout photo released in 2019. Halifax police say the man suspected of killing a woman and her father on New Year's Eve was a fugitive wanted in ...

The latest deaths came on New Year’s Eve, as 39-year-old Matthew Costain allegedly shot and killed his girlfriend, 40-year-old Cora-Lee Smith, and her father, 73-year-old Bradford Downey ...