By Leah Schnurr OTTAWA (Reuters) - Canadian police on Tuesday arrested an Ottawa man they said was planning to aid Islamic State fighters and charged him with participation in the activity of a terrorist group. The Royal Canadian Mounted Police said the man, Awso Peshdary, 25, was also accused of facilitating the activity of a terrorist group. Police said they had laid charges in absentia against two other Ottawa men they said had left Canada to fight with Islamic State. They named them as Khadar Khalib, 23, and John Maguire, 24.