Al-Haswani had exited a religious celebration at the Al-Mostafa Islamic Centre on 545 Main St. E. when he saw two people "accosting" an older man, police say.
Police in Hamilton are looking into the authenticity of a GoFundMe page created for the family of a murdered teenager and are urging the public to refrain from donating to the page while they investigate.
The account was reported to the police by the Al-Hasnawi family.
"We have confirmed that this is unauthorized", Doerr said.
It listed a targeted goal of $1,000, but raised $1,345. Doerr said the money is expected to be returned to the donors.
19-year-old Yosif Al-Hasnawi, who was a first-year medical science student at Brock University, was shot on December 2 after attempting to intervene as two young men accosted a senior citizen in downtown Hamilton.
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There is also an ongoing Ministry of Health and Long-Term Care investigation into the conduct of paramedics, who witnesses have accused of failing to take Al-Hasnawi's injuries seriously and taking too long to transport.
Al-Hasnawi was a first-year medical science student at Brock University.
Meanwhile, a 20-year-old has since been arrested in connection to the original incident and charged with being an accessory after the fact to murder.
Brock University will hold a vigil in the name of Yosif on Friday at Pond Inlet, beginning around 3:00 p.m.
Anyone with information on the GoFundMe account is asked to contact the Det.
The force's major fraud branch is now looking into the legitimacy of the account.