Fredericton is the capital of the province of New Brunswick, and is home to just under 60,000 people.
She said police were not in a position to release their names at this time.
Justin Mclean said there had been fights at the complex, but never like this. They were shot as they rushed over to two people lying on the ground.
Donavan said she has lived in her apartment for almost four years and that the area is very peaceful.
"It is with great sadness that I'm speaking with you here today", Fitch said. "The cops have come through my place".
One image he reposted said: "If you think it's OK to kill or attack police officers, unfollow me now". "It sounded like it started in the courtyard area", he said.
Atlantic time, when local resident David MacCoubrey said he woke up to the sound of three gunshots outside his bedroom window.
Earlier on Friday, Fredericton police said that two of those killed were police officers. "Now it happened here", Gamon said with a sad shrug.
National broadcaster CBC contacted employees at a nearby Tim Hortons and they said they have locked their doors of the coffee shop so customers could not exit or enter. Here is what a quiet, residential Fredericton neighbourhood looked like this morning after it was rocked by gunfire.
Fredericton is a city of roughly 58,000 about 75 miles from the ME border.
"I offer my condolences, thoughts and prayers to the victims and their families".
"With RCMP support, this developing situation is under investigation by Fredericton Police".
Police were also asking people on Facebook not to use social media to report on police locations.
"All the businesses even on the outside of the lockdown area have their lobbies and their business areas closed".
Jeff Gamon, co-owner of Scandimodern, a furniture store in downtown Fredericton, said he was surprised when he learned of the shooting, but not shocked. "To see that there's actually fatalities is pretty extraordinary for this area it doesn't normally happen".