A group that lost its federal charitable status over alleged ties to Hamas is no longer sponsoring an Islamic conference in Toronto at which Liberal leadership hopeful Justin Trudeau is expected to speak.

On Saturday, the Reviving the Islamic Spirit (RIS) conference posted a release on its website, saying that its organizers had accepted IRFAN-Canada's unconditional withdrawal as a secondary sponsor of the annual gathering, the largest of its kind in Canada.

"The material evidence used by Revenue Canada against IRFAN are matters best left to the relevant legal bodies to be resolved," said Fouzan Khan, a founder and director of RIS, in the release. "It is extremely unfortunate that this issue has threatened to detract from the many accomplishments of RIS in the last ten years."

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