The purported leader of an Islamic extremist group blamed for an Easter attack in Sri Lanka that killed over 320 people began posting videos online three years ago calling for non-Muslims to be "eliminated," faith leaders said Tuesday.

Bhanuka Harischandra was running a little late for his meeting Sunday. As a car carrying him pulled into the back entrance of the luxury Shangri-La Hotel in Sri Lanka's capital of Colombo, he realized something was wrong.

Prayers were said for victims of the Sri Lankan attacks at Calgary churches on Easter Sunday.