City police are warning Calgarians about a high-risk offender released into the city yesterday after serving a six-year sentence for his second manslaughter conviction.

Matthew Adrian Boyes, 38, poses a significant risk to the public, said Staff Sgt. Todd Zelensky.

“Mr. Boyes’ history is of attacks against known as well as persons unknown to him and peace officers,” Zelensky said, adding Boyes assaulted a corrections officer while serving time.

Boyes’ most recent sentence stemmed from a 2000 assault that left a Calgarian dead. He was also convicted of manslaughter in 1990 for killing a client while working as a prostitute in Edmonton.

“One of his offences involved an alternative lifestyle, but not all of his offences, only one, so again it comes back to the randomness of his offences, which leads to the risk,” Zelensky said.

Boyes was released with conditions and will be monitored by the police’s High-Risk Offender Program for a year, after which a longer period of surveillance can be sought.

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