In the early hours of Monday morning, four people drove up to a house on Logan Lane in Moncton, stepped out, fired several shots at a teenager and drove off, RCMP believe.
The teen, now identified by police as 18-year-old Joedin Leger, died in hospital later that morning.
RCMP are now looking for the four homicide suspects who fled in the car in the direction of Mountain Road in Moncton, RCMP spokesperson Hans Ouellette said Tuesday.
The force is asking anyone who lives in the area of Logan Lane, Kendra Street and Noel Street to contact them if they have security footage.
Anyone driving through the area between 1 a.m. and 10:30 a.m. on Monday and have a dashcam should also contact police, Ouellette said.
He said no arrests have been made, but "there is no threat to the public."
"We believe this to be an isolated incident, and do not believe the safety of the general public is at risk," Ouellette said.
He said one other person was inside the house but was not injured.
Earlier Tuesday RCMP said people no longer have to avoid the residential area. RCMP tweeted they've concluded the operation in Moncton's north end, and "Residents may return to normal activities."
During the early morning hours, RCMP were called to a duplex on Logan Lane, where they found the wounded teenager and evidence of shots fired.
A portion of the lane was blocked off Tuesday morning but was cleared Tuesday afternoon, according to RCMP. The force said there will still be officers around the area to continue the investigation.
School hold and secure not connected
Around mid-morning Monday two high schools went under hold and secure. Harrison Trimble High School is five kilometres southeast of Logan Lane, and Moncton High School is 14 kilometres northeast of the lane.
This is a step below lockdown, so students and staff were still moving around the building, but no one could enter or leave.
RCMP said later that they believe the hold and secure and the shooting on Logan Lane were not connected.
"There's no indication that they're linked," Ouellette told Radio-Canada.
Anglophone East School District spokesperson Stephanie Patterson said Tuesday that neither of the schools was placed on lockdown at any point Monday, and things are back to normal Tuesday.
"Classes continue as normal today," she said. "The RCMP is your best source for information on the investigation. We followed guidance from the RCMP."