The man responsible for shooting Canadian Peace Arch border guard Lori Bowcock on Tuesday before turning the gun on himself has been identified as 32-year-old Andrew Michael Crews of the greater Seattle area.

Crews' identity was confirmed by the BC Coroners Service late Wednesday.

Now police are left trying to figure out what led Crews, a tattoo artist, to Tuesday's shooting.

"This investigation remains in the early stages and investigators are attempting to determine a motive," said RCMP Superintendent Kevin Hackett in a statement. "The current evidence clearly indicates that prior to taking his own life, Mr. Crews deliberately fired at the victim."

Hackett went on to say that there was no evidence that Bowcock had been targeted specifically.

"Our thoughts are with the CBSA Officer and her family during this difficult time," he said.

According to Crews' Facebook page, he grew up in Las Vegas and moved to Seattle in 2011 to work at Lucky Boys Tattoo Parlor in Silverdale, Wash., located a few miles out of Seattle. Crews, also a musician, appeared to be working for Under the Needle Tattoos, also in Seattle.

Also posted on his Facebook page was Crews' favourite quote, "War is young men dying and old men talking."

At 2 p.m. Tuesday, Crews arrived at Bowcock's booth at the Peace Arch border driving a white van with Washington plates. Shortly afterwards, Crews shot Bowcock in the neck area before turning the gun on himself.

While Crews died at the scene, Bowcock survived and was airlifted to hospital, where she is expected to make a full recovery.

As a result of the shooting the Peace Arch Border was closed for a most of Tuesday and Wednesday, fully reopening Thursday morning.

The investigation continues as the RCMP and Integrated Homicide Investigation Team interview eyewitnesses and work with international law enforcement.