Ottawa ( CNN ) A third Canadian man arrested this week on terrorism-related charges will remain in custody after making a brief court appearance Tuesday . Suliman Mohamed , 21 , stood watching the court proceedings before being remanded into custody . He wore a brown-colored , hooded jacket and was carefully watched by his parents , sitting in the front row . The Royal Canadian Mounted Police announced Mohamed 's arrest Monday , charging him with participating in the activity of a terrorist group and conspiracy to participate in terrorist activity . Federal prosecutor Roderick Sonley indicated Tuesday that the government would disclose more details of evidence against Mohamed before his next court date , set for February 12 . Outside the Ottawa courthouse , Mohamed 's father defended his son , saying he was a devout Muslim and not a radical . `` My son is not involved in this at all , '' Idris Altahir said . `` He 's a very normal person , quiet , polite and generous . '' Police allege Mohamed 's terrorist activity was directly linked to the arrests of Ashton and Carlos Larmond , two Ottawa twin brothers accused of conspiring to commit terrorism offenses . `` My son does n't participate in these things , but we 're going to see the evidence , what they have , '' Altahir said . After an investigation dating back to at least August , the Larmond brothers , both 24 , were arrested Friday in two different locations . Ashton Larmond was arrested in Ottawa , but his brother Carlos was arrested at Montreal 's Pierre Elliott Trudeau International Airport , where police allege he was intending to travel overseas for terrorist purposes . Carlos Larmond was charged with participation in the activity of a terrorist group but also with attempting to leave Canada to participate in terrorist activity abroad , a relatively new Canadian terrorism law . Through their attorney , the brothers indicated they would be fighting the charges . To date , the Royal Canadian Mounted Police have released few details .
Suliman Mohamed makes court appearance after arrest on terror-related charges . `` My son is not involved in this at all , '' Mohamed 's father says . Score: 6