All of the victims were related, police said.
The horror unfolded at a home on 111th Street near 95th Avenue in Richmond Hill around 10:30 Saturday night.
When investigators arrived, they found a 27-year-old Vipanpal Multani with multiple gunshot wounds to his body. Medics pronounced him dead at the scene.
A 52-year-old woman was rushed to the hospital in stable condition with a gunshot wound in the torso.
Less than a mile away at 109th Avenue and 96th Street, police found the body of a 33-year-old Karamjit Multani with a gunshot wound to his head.
Detectives found a firearm next to his body.
The reason behind the gun violence remains unclear at this hour but the investigation is ongoing.
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