Prosecutors say more charges are possible against Kai-Ji Adam Lo, who was arrested at the scene

The suspect in a car-ramming attack that killed 11 people and injured dozens at a Filipino heritage festival in the Canadian city of Vancouver has been charged with eight counts of second degree murder, prosecutors have said.

More charges were possible against Kai-Ji Adam Lo, 30, the British Columbia prosecution service said. Investigators ruled out terrorism and said Lo had a history of mental health issues.

Some of the injured were in critical condition. As of Sunday evening authorities had not released the names of those killed, but said they were aged between 5 and 65.