The city is located in eastern Canada.
Authorities are still pursuing leads in an ongoing investigation of a serial killer who has been charged with killing eight men in the city in recent years. There is no official word on how many people have been hurt.
Clement says the Fredericton Police are considered an average-sized police department and that everyone in the community would likely know the officers who were killed.
The circumstances of the shooting in Fredericton, about 75 kilometers (45 miles) from the border between Canada and the U.S. state of ME, were not immediately clear.
Police said there are multiple fatalities and have urged local residents to stay in their homes and lock their doors.
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Police later confirmed there was no further threat to the public.
"With the tempo, it might've been a gunshot", he said.
"This sort of thing never happens here", Hill said.
MacCoubrey said three gunshots woke him up, and as many as 17 more were fired between that time and around 8:30 a.m.
Bad news coming out of Fredericton. Wait for updates from police, ' the Fredericton Fire Department said on Twitter.
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"We are not in the area, but we are only keeping our doors locked as a precaution", she said.
"Police continue to on scene of a shooting on Brookside Drive".
The town of Fredericton is located about 70 miles from the US border. Residents have been asked to call 911 if there is an emergency.
"I looked out the window and there were three police cars on the street just across from where I live", said another witness in the area.
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