One suspect, a man, is in custody and investigators believe he is the only suspect, Langley, the Royal Canadian Mounted Police said in a news release.
Jessica Bernardo told CNN she was driving to work when several police cars pulled up in front of her vehicle and stopped traffic at the corner of 200 Street and Highway 10 in Langley.
“They (the police) started running with guns,” Bernardo said. “I noticed to my right that they had someone on the ground.”
Bernardo said police held up traffic for about 15 minutes before allowing drivers to pass.
Authorities had issued an emergency alert, warning residents of potential danger, until police could determine if the suspect was acting alone, police said. A later alert noted that they had the only suspect in custody.
In Canada, the National Public Alert System is used to provide “potentially life-saving alerts that are area-specific (geographically targeted),” according to its website.
The investigation remains active, police said in a news release.