RCMP say a father and son facing terrorism related charges were allegedly in the advanced stages of planning a serious, violent attack in Toronto.

The Mounties allege the 62-year-old and 26-year-old knowingly facilitated terrorist activity in the Greater Toronto Area.

They say the two were arrested at a Richmond Hill, Ont., hotel on the weekend.

Police say there is no evidence to suggest there is a remaining risk to the public.

Both men face one charge each of participation in the activities of a terrorist group, facilitating terrorist activity, conspiracy to commit murder and weapon possession for a dangerous purpose.

The 62-year-old father also faces an additional charge of aggravated assault.

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