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Suspect in cancer researcher’s murder charged with stabbing, robbing senior

Mark Ernsting, 39, was killed following a stabbing in downtown Toronto on Dec. 15, 2015. Ontario Institute of Cancer Research/VIMEO

TORONTO – The man charged with murder in connection to the death of a Toronto cancer researcher is now facing assault and robbery charges stemming from an incident earlier that night.

Calvin Michael Nimoh, 21, was arrested and charged with second-degree murder on December 15, shortly after the fatal stabbing of 39-year-old Mark Ernsting.

Ernsting, a biomedical engineer, died in hospital after he was stabbed during an evening walk near Church and Gerrard streets.

READ MORE: Cancer researcher out for ‘usual evening walk’ fatally stabbed in downtown Toronto

On Tuesday, police announced that Nimoh and two women are now facing charges stemming from the robbery and stabbing of a 65-year-old woman that same evening.

Police say Nimoh, 24-year-old Tia Thompson and an unidentified teen stabbed the woman and stole her purse at approximately near Yonge Street and Summerhill Avenue at 7:45 p.m., shortly before Ernsting’s stabbing.

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Nimoh is now charged with robbery, assault with a weapon and possession of weapon for dangerous purposes.

Thompson and the 18-year-old suspect who cannot be identified under the Youth Criminal Justice Act, are both charged with robbery, aggravated assault and possession of property obtained by crime.

Thompson also faces two charges linked to the Ernsting murder, accessory after the fact and obstructing a peace officer.

Anyone with information is asked to contact police at 416-808-7400, or submit an anonymous tip to Crime Stoppers anonymously 416-222-TIPS (8477), online at www.222tips.com, or by texting TOR and your message to CRIMES (274637).

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