Doug Baum, counsel for Suliman Mohamed, says the Crown has not yet disclosed details of the allegations.
Mohamed, 21, made a brief court appearance after being charged earlier this week with participation in the activity of a terrorist group.
Mohamed has also been charged with conspiracy to participate in a terrorist activity with two other Ottawa men.
Twin brothers Ashton Carleton Larmond and Carlos Larmond of Ottawa were arrested last Friday.
Carlos was preparing to board a plane to India.