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Halifax police arrest third person in Devon Sinclair Marsman homicide

HALIFAX — Halifax police have arrested a third person in a homicide case involving a 16-year-old who went missing two years ago. Sixteen-year-old Devon Sinclair Marsman was last seen alive on Feb.
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Halifax Regional Police headquarters is shown in Halifax on Tuesday, September 17, 2024. THE CANADIAN PRESS/Darren Calabrese

HALIFAX — Halifax police have arrested a third person in a homicide case involving a 16-year-old who went missing two years ago.

Sixteen-year-old Devon Sinclair Marsman was last seen alive on Feb. 24, 2022 and was reported missing from the Spryfield area of Halifax the following month.

Last week, Halifax police arrested two people after human remains were discovered.

Halifax Regional Police say 23-year-old Emma Maria Meta Casey was arrested Wednesday in suburban Dartmouth.

She is facing three charges: obstructing justice; being an accessory after the fact to murder; and causing indignity to human remains.

Last week, police charged 26-year-old Treyton Alexander Marsman with second-degree murder, and charged a second man — a 20-year-old who was a youth at the time of the homicide — with being an accessory after the fact to the murder and obstructing justice.

Halifax police Chief Don MacLean has confirmed the Marsmans "share a familial relationship," but he declined to be more specific.

This report by The Canadian Press was first published Sept. 26, 2024.

The Canadian Press