Travis Brandon Baumgartner is arrested attempting to cross into the United States at Lynden, Washington,.

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NEW: The arrest ends a 36-hour manhunt

Travis Baumgartner, 21, is captured while attempting to cross into the United States

He will be brought back to Edmonton, Canada

Baumgartner is suspected of killing three people during a robbery attempt at the University of Alberta

CNN  — 

Travis Baumgartner, the man accused of killing three people during a robbery attempt at a Canadian university, was arrested Saturday by U.S. border officials in Washington, police said.

He was caught while attempting to cross into the United States at the Lynden, Washington, U.S.-Canada border, south of Abbotsford, British Columbia.

“We’re grateful to the border officials at Lynden, Washington, for their excellent work in arresting a man we believe was armed and extremely dangerous,” Bob Hassel, superintendent of the Edmonton Police criminal investigations division, said in a statement.

Baumgartner – who was driving a dark blue Ford F-150 with what was likely his mother’s license plate will be brought back to Edmonton, the statement read. His arrest ended a 36-hour manhunt.

Edmonton police say Baumgartner is behind the Friday robbery of an armored vehicle at the University of Alberta. The shooting left three security employees dead and a fourth critically injured.

Canadian authorities filed warrants for three counts of murder for the 21-year-old man, who worked at the same security firm as the victims.

He “is believed to be one of several armored company employees that attended the U of A around midnight” on Friday “to make a delivery,” Edmonton police said in a statement.

Before his capture, both police and his mother begged Baumgartner to turn himself in.

“Trav, as your mother, I ask that you come forward now and take responsibility for your actions,” said Sandy Baumgartner, according to the Edmonton Police Service.

“Please Travis, I love you, and I’m pleading with you with all of my heart, to end this without further bloodshed. As your mother, I promise to you now, that I will be there by your side to support you.”

Canadian police prepare murder warrants against man sought in Alberta shooting

CNN’s Maggie Schneider and Jake Carpenter contributed to this report.