Fredericton police have confirmed two of their officers are among the four dead after a shooting in New Brunswick's capital. It was not immediately clear what caused the shooting.
But officials warned that the incident was "still active" and urged residents to stay inside and lock their doors.
Police in Fredericton said just after 11 a.m. local time there was no further threat to the public and lockdowns were being lifted. When she was hired, police told reporters how excited they were to have her on patrol because she was from the area.
In 2014, three federal police officers were killed and two more were injured after responding to an emergency call about an armed man roaming a residential neighborhood of nearby Moncton, New Brunswick.
He said he first heard three gunshots that woke him up and then heard as many as 17 more between that time and 8:30 a.m.
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Louise Kennedy, 75, who lives with her dog at 237 Brookside Drive, said the shooting began in the building next door at about 7 a.m.
Fredericton's deputy police chief Martin Gaudet said the two officers arrived at the apartment complex and saw two deceased civilians before being shot and killed themselves.
"There is a police officer standing outside with a gun", CTV Atlantic's Nick Moore said on CTV's "Your Morning".
Scott MacDonald was sitting at Tim Hortons in Fredericton, N.B., this morning having a coffee when he noticed the police cars and ambulances race by.
One resident told CBC News that he heard a series of shots ring out around 7 am. The local police have also tweeted asking the local population to avoid calling the police station directly due to a high volume of calls. MacCoubrey added that it sounded as if the gunfire was coming from the middle of the square in his apartment complex.
"We're just up the street from where it happened, " MacDonald said.