Paramedics responded to an Queenston Road apartment shooting that left one dead and three in hospital with potentially life-threatening injuries early Sunday morning.

Hamilton EMS duty officer Ben Ross said three men were shot, one fatally, and a woman was being treated for injuries after she jumped from a third floor apartment.

The building is located at the Red Hill Valley Parkway and Queenston Road.

Hamilton Police did not return phone calls asking about the shooting. Hamilton EMS said they were called to the building just before 2:30 a.m. Sunday.

What they found was one man between 20 and 30 years old with no vital signs, a 34-year-old man with a gunshot wound to his back, a 26-year-old man with a gunshot wound to his left abdomen, and 26-year-old woman with "injuries to her head, hip and lower back," Ross said.

"She apparently jumped from the third floor, I have no information as to why she would jump," Ross said.