"We understand the fear and pain this causes, especially on Yom Kippur," the police stated.
B'nai Brith Canada said that police were investigating the throwing of stones at the Pride of Israel Synagogue as a potential hate crime.
The case is the first time a Canadian jury was asked to hear legal arguments about white supremacist terrorism.
Ron East claims that he was wrongfully arrested, due to his Jewish faith, for not moving his car quick enough while preparing for a counter-demonstration.
Initial reports from the police suggest the attack may have targeted specific individuals, but no reports on the gunman have been released.