Halifax RCMP say they were called to the shooting at 52 Arklow Dr. around 7 p.m.
Paramedics rushed the victims to the QEII hospital in Halifax where they remained late Sunday night.
Two men and one woman were injured in the shooting. Their ages weren’t known, but it was being reported one of the victim’s was the son of the homeowner.
Const. Sandra McNaughton of the RCMP said Sunday night they were still trying to determine a motive for the shootings, which resulted in a heavy police presence in the Cole Harbour neighbourhood.
“Everything is still coming in and being investigated as we speak,” she said.
“They fired shots when they got inside,” McNaughton added of how the shooting went down.
The RCMP closed down several streets to traffic and were asking people to stay away from the area as they investigated.
Around 9 p.m., McNaughton said a man and a male youth were taken into custody after police surrounded a home on nearby Caldwell Road. No other details were provided.