06/05/2014 10:37 EDT | Updated 06/16/2017 01:00 EDT

Moncton Shooting Captured In Facebook Video (GRAPHIC)

Vanessa Bernatchez/Facebook

UPDATE: Justin Bourque was arrested early Friday by Moncton police. Read updates here.

Video posted to Facebook Wednesday evening appears to show the shooting of an RCMP officer in Moncton, New Brunswick.

Vanessa Bernatchez witnessed the shooting and shared a series of videos taken from within her home. CBC News reported that Bernatchez's family attempted to warn the officer outside by banging on their window but that they were unsuccessful.

WARNING: The videos below contain graphic content and language. Viewer discretion is advised.

Bernatchez told the Los Angeles Times that she was with her mother and stepfather in her backyard when a neighbour came by to warn them about a gunman on their street. They heard shots on their way into the home.

Once inside they saw the shooter on the street, identified by police as 24-year-old Justin Bourque. Bernatchez's step-father banged on the window but was unable to get the officer's attention. The gunman then shot the officer at a close range of approximately four to five metres, Bernatchez told the Times.

Bernatchez said a bystander attempted to help the wounded officer but the gunman warned the person away. The shooter did not fire at the bystander, Bernatchez said.

Subsequent Facebook videos show more police arriving on the scene and searching cars.

Three mounties were killed in the shooting spree and two others were wounded. As of Thursday morning, an intense manhunt for the shooter was still underway.