One of Toronto's most violent gang leaders was sentenced to 18 years behind bars for his part in the shootings of two Scarborough men.

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Tyshan Riley, the head of the Galloway Boys, was sentenced to 18 years behind bars for his part in the shootings of two Scarborough men. ((Alex Tavshunsky/CBC))

Tyshan Riley was found guilty earlier this month on two counts of attempted murder in the shootings of Koffi Patrong, 19, and Chris Hyatt, 19, in April 2004.

Riley, the head of the so-called Galloway Boys, is already serving a life sentence for shooting two other innocent Malvern men in which one died.

He was under police surveillance at the time of the April 2004 shootings.

"He is to me the purest form of human evil. He is a man that had no regard whatsoever for human life," said Toronto homicide Det. Wayne Banks.

Banks said Riley preyed on residents of the Malvern neighbourhood, the home of a rival gang. He killed one man and wounded three others, who were innocent bystanders targeted because of where they lived.

He was 'playing God'

"This was part of the gang atmosphere. His disregard for Malvern people. His disregard for human life, and you were expendable if you lived up there," Banks said. "He basically was playing God."

Riley was allegedly avenging the death of his mentor Norris Allen.

Riley showed no emotion and refused to apologize to his victims, many who say they still live in fear.

He was already in jail in connection with the March 2004 shooting of two men that left one dead.

Riley, along with two other Galloway Boys members, shot up an SUV belonging to Brenton Charloton, thinking he belonged to the rival gang Malvern Crew.

Charlton, 31, was killed in the attack, while another man, Leonard Bell, was seriously injured.