OTTAWA (AFP) - Police on Tuesday laid terrorism charges in absentia against two missing Canadians accused of travelling to Pakistan to join the Afghan insurgency and train militants. Maiwand Yar, 27, a former mechanical engineering student at the University of Manitoba in Winnipeg, is wanted on charges of conspiring and participating in the activities of a terrorist group. Ferid Ahmed Imam, 30, who disappeared in the final year of a biochemistry program at the same school, is charged with instructing others on how to carry out terrorist activities and conspiring to participate in a terrorist group.