The man suspected of shooting a transit police officer at a Surrey SkyTrain station this week previously pleaded guilty to a fatal shooting that happened just down the street.

Daon Gordon Glasgow was convicted of manslaughter in the 2010 death of Terry Scott in a McDonald's bathroom, located a few hundred metres away from the scene of Wednesday's shooting.

Text messages obtained by police revealed he two had met up to negotiate a sale of approximately five ounces of hashish. The deal turned deadly, with Glasgow shooting Scott through the heart before fleeing the scene.

He was handed a nine-year prison sentence in 2011 and given a lifetime weapons ban.

On Thursday, Surrey RCMP identified Glasgow as the suspect in a brazen shooting at Scott Road Station that left 27-year-old officer Joshua Harms with non-life-threatening injuries.

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He is currently wanted on a Canada-wide warrant for being unlawfully at large. Mounties have notified officials in other jurisdictions to be on the lookout for the suspect.

Police describe Glasgow as "a chameleon" who is able to quickly alter his appearance.

Mounties released eight photos showing Glasgow over a 20-year period to highlight his ability to change his appearance.

"We're looking at things you can't easily change, so it's not easy to change your height or quickly change your weight," said Cpl. Elenore Sturko of the ongoing search.

Sturko says police are reducing their presence in the Bridgeview neighbourhood but emphasized they're not scaling back their search.

At the time of his 2011 sentencing, the judge believed there was a chance Glasgow could be rehabilitated.

"He has pleaded guilty and by doing so he has acknowledged his culpability. He has also expressed a genuine remorse for the pain and loss he has caused to the Scott family. The letters of reference that have been filed in support of Mr. Glasgow suggest that he has the potential to turn his life around and become a contributing member of the community," wrote Justice G.R.J. Gaul in his sentencing.

Parole board had concerns about re-offending

Glasgow's criminal history dates back to at least 2005, when he appeared in court for a drug offence. Since then he's appeared on a variety of charges, ranging from possession of a restricted weapon in 2006 to possession for the purpose of tracking in 2008 and theft over $5,000 in 2009.

Parole documents released to CTV News paint a larger portrait of Glasgow's criminal dealings.

According to the board, Glasgow had "ingrained criminal values" and a history of failing to abide by court ordered conditions.

While in prison, he was found to be in possession of drugs worth more than $3,000 and carried a shank.

He was released in December 2016, but two months later had that release suspended after testing positive for THC, associated with a negative associate outside his supervision area and driving without a licence.

The board had concerns about Glasgow's potential to reoffend, writing that his January 2014 psychological assessment indicated a moderate to high risk for violent re-offending.

"Although the majority of your convictions are non-violent in nature, your current offence represents a significant increase in severity. Your lack of insight into the dynamics of this offence and your understanding of its impact suggests to the Board that you have the capacity to commit further offences of this nature," the board wrote in its decision.

As part of his statutory pre-release in October 2018, he had six conditions to follow, including finding work, not consuming drugs or alcohol and residing at a facility approved by correctional services.

In an inmate dating profile of a man with the same name and age, Glasgow describes himself as looking forward to "nothing but positive moves toward my future."

The suspect is 5'5" and 170 pounds with black hair and brown eyes. At the time of the Wednesday's shooting, RCMP say, he appeared to have black stubble and a mustache, and was wearing a blue hoodie and white Nike running shoes.

With files from CTV Vancouver's Emad Agahi, Allison Hurst and Sheila Scott

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