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Calgary courts

Crown to seek indeterminate sentence for man convicted of raping 90-year-old Calgary woman

Duran Ross Buffalo, 41, faces a two-week dangerous offender hearing in Calgary Court of King's Bench over a Jan. 1, 2021, attack

Crown to seek indeterminate sentence for man convicted of raping 90-year-old Calgary woman

A Calgary prosecutor said Monday he will ask a judge to declare Duran Ross Buffalo a dangerous offender and impose an indeterminate prison term, a sentence that could keep him locked up indefinitely.

Crown lawyer Matt Dalidowicz made the request to Justice Michele Hollins at the start of a two-week dangerous offender hearing in Calgary Court of King's Bench. Buffalo, 41, was convicted by a Calgary jury on Feb. 7, 2025, of aggravated sexual assault and breaking into a residence to commit that crime.

The offence was the rape of a 90-year-old woman on Jan. 1, 2021, after Buffalo broke into her northwest Calgary apartment. Dalidowicz said Buffalo has been convicted since 1999 of sexually abusing six females: five minors and the 90-year-old woman.

"The sexual offending is repetitive and escalating," Dalidowicz said. He described the attack on the woman in her bed as brutal on any measure.

Dalidowicz said he expects a psychiatrist and a psychologist who assessed Buffalo to give similar opinions. "On the measures of sexual reoffending, he falls in the highest risk category on every tool," he said.

He said the Crown's case rests on 20 years of conduct, the professionals' opinions and evidence about what the system can and cannot do to manage the risk. He said Buffalo has shown no past interest in treatment for substance abuse or in obeying court orders.

Dalidowicz said an indeterminate sentence does not necessarily mean no end. He said the Parole Board of Canada reviews such sentences, and that Buffalo's progress would determine whether he could be released.

Buffalo is not represented by a lawyer. Defence lawyer Bev Broadhurst has been appointed as amicus to cross-examine witnesses and make arguments.

Buffalo spoke briefly to the judge after the Crown's opening, in a voice barely above a whisper. "I just want all the evil not to be in my life," he said.

The hearing continues.

How this story was checked

3 of 5 main claims confirmed by other sources. An editor checked the story and approved it before it was published.

Independent web check · Trust score 80/100

An AI check searched the web for each main claim. The score comes only from what it found, so the newsroom cannot change it. How the score works

  1. Confirmed A Calgary prosecutor said Monday he will ask a judge to declare Duran Ross Buffalo a dangerous offender and impose an indeterminate prison term; Crown lawyer Matt Dalidowicz made the request to Justice Michele Hollins at the start of the hearing. Yahoo News Canada reports that Dalidowicz applied for a dangerous offender designation. It says he argued for an indeterminate sentence if Justice Hollins makes that ruling. It also says he gave his opening statement on Monday. Dangerous offender hearing underway in Calgary for man who raped 90-year-old, sexually assaulted 5 kids
  2. Confirmed Buffalo, 41, was convicted by a Calgary jury on Feb. 7, 2025, of aggravated sexual assault and breaking into a residence to commit that crime, for the rape of a 90-year-old woman on Jan. 1, 2021, after breaking into her apartment. Yahoo News Canada reports a jury convicted Buffalo in February of aggravated sexual assault and breaking and entering to commit sexual assault. It reports the rape of a 90-year-old woman in her seniors' apartment on Jan. 1, 2021. It gives his age as 41 now and 40 at the earlier hearing. I did not find the exact Feb. 7 date in the text I read. Crown to seek dangerous offender designation for man who raped 90-year-old · Dangerous offender hearing underway in Calgary
  3. Confirmed Dalidowicz said Buffalo has been convicted since 1999 of sexually abusing six females: five minors and the 90-year-old woman. Yahoo News Canada reports Buffalo sexually assaulted five children aged four to 16, in addition to the 90-year-old woman. The 1999 start date is not shown in the text I read. Dangerous offender hearing underway in Calgary
  4. Not found Buffalo is not represented by a lawyer; Bev Broadhurst has been appointed as amicus to cross-examine witnesses and make arguments. Yahoo News Canada confirms Buffalo is representing himself. I found nothing on Broadhurst's appointment or role as amicus.
  5. Not found A psychiatrist and a psychologist assessed Buffalo, and he "falls in the highest risk category on every tool" for sexual reoffending. This is the prosecutor's own characterisation in court. I found no independent source for the assessments or their results.

Our newsroom's record

An editor checked 8 claims in this story against 1 source before it was published.

Claims checked: 8. Sources used: 2. 1 matched to a source we list. 7 without a second source of our own (the web check above may still have found one).

Sources the newsroom lists

  1. Calgary Crown wants man who raped 90-year-old woman in her home locked up indefinitely (News report or publication)
  2. Dangerous offender hearing underway in Calgary for man who raped 90-year-old, sexually assaulted 5 kids (News report or publication)

Independent web check on Nov 2, 2026. Checked by our verification desk on Nov 2, 2026. An editor approved the story before it was published. Our standards

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