CALGARY -- The Calgary Police Service has issued a public warning after confirming a 22-year-old man who allegedly poses a significant risk to the community moved from Edmonton to Calgary.

According to the Edmonton Police Service, Tristan Thom was released from incarceration earlier this fall and is not bound by any conditions or court orders.

Edmonton police say the 22-year-old is capable of extreme violence — especially when under the influence of alcohol or other drugs — and is known to lash out when he feels disrespected or challenged.

After learning that Thom now resides in Calgary, CPS encourages Calgarians to take suitable precautionary measures to avoid potential confrontations with the convicted offender.

Thom is described as:

  • 178 cm (5-10) tall
  • Weighing 73 kg (160 lbs)
  • Having black hair and brown eyes

Thom's prior convictions include:

  • Assault casuing bodily harm (x2)
  • Property damage over $5,000
  • Causing a disturbance

One of Thom's assault causing bodily harm convictions was in relation to the 2017 attack on high-profile murderer Douglas Garland at the Calgary Remand Centre. Garland, who was convicted of first degree murder in the 2014 deaths of Alvin and Kathy Liknes and the couple's grandson, Nathan O'Brien, was attacked within hours of being incarcerated and was transported to hospital.

CPS officials say they do not condone vigilante action and the decision to release Thom's description and photograph was done to ensure public safety.