Quebec court Judge Jean-Pierre Boyer made reference to the definition of a "lone-wolf" terrorist in his decision to keep Jeffrey Labelle in custody.
Boyer also said Labelle is a danger to himself and to his family. He ordered the 21-year-old to undergo a psychiatric evaluation.
Montreal police arrested Labelle on Friday after a joint investigation with the RCMP. Police say he had allegedly converted to an extremist form of Islam and had allegedly threatened to carry out a terrorist attack.
Labelle is facing a charge under a provision of the Criminal Code related to anyone who commits an act that "is likely to cause a reasonable apprehension that terrorist activity is occurring or will occur, without believing that such activity is occurring or will occur."
Police have said no direct threats were made and that they arrested Labelle as a "preventative" measure.
Mother raised concerns
Crown prosecutor Sylvie Lemieux said Labelle's mother raised concerns with a social worker about his changing behaviour. The social worker alerted police.
At one point, Labelle told his mother she would see him on television after having done something major, according to Lemieux.
Lemieux also listed a number of weapons found in the apartment, including a machete, knives and an air gun.
Jonathan Lambert, a criminologist who had met with Labelle since his arrest, also testified at the bail hearing.
He said Labelle was the victim of violence when he was a child and had trouble in school, only completing the second year of high school.
Lambert said Labelle doesn't have the profile of a person who poses a risk, but recommended he be held in custody for observation.