Murder charges were filed Sunday against a suspect in a weekend car ramming attack that killed 11 people between the ages of 5 and 65 at a Filipino heritage festival in the city of Vancouver, a tragedy that shook Canada on the eve of a federal election. The British Columbia Prosecution Service charged Kai-Ji Adam Lo, 30, with eight counts of second degree murder and said more charges were possible. Investigators ruled out terrorism and said Lo had a history of mental health issues. Lo, a Vancouver resident, appeared in court and remains in custody, prosecutors said. An attorney for Lo wasn’t listed in online court documents and The Associated Press wasn’t immediately able to reach an attorney representing him. Dozens of people were injured, some critically, when a man driving a black Audi SUV entered the street just after 8 p.m. Saturday and struck people attending the Lapu Lapu Day festival. He was arrested at the scene. Authorities had not released victims' names by Sunday evening. “It is the darkest day in Vancouver’s history,” Police Interim Chief Steve Rai told a news conference. “The person we have in custody does have a significant history of interactions with police and health care professionals related to mental health," he said. Video of the aftermath shows the dead and injured along a narrow street in South Vancouver lined by food trucks. The front of the driver's SUV is smashed in. Kris Pangilinan, who brought his pop-up clothing and lifestyle booth to the festival, saw the vehicle enter past the barricade slowly before the driver slammed on the gas in an area that was packed with people after a concert. He said hearing the sounds of bodies hitting the vehicle will never leave his mind. "He sideswiped someone on his right side and I was like, ‘Oh, yo yo.’ And then he slammed on the gas,” he said. “And the sound of the acceleration, it sounds like an F1 car about to start a race. "He slammed on the gas, barreled through the crowd. And all I can remember is seeing bodies flying up in the air higher than the food trucks themselves and landing on the ground and people yelling and screaming. It looked like a bowling ball hitting bowling pins and all the pins are flying into the air.” Pangilinan said that it would be hard to believe “that someone has some malice against the Filipino people.” Suspect was detained by bystanders before the police arrived A 30-year-old Vancouver man was arrested at the scene. Rai said that the man was arrested after initially being apprehended by bystanders. Video circulating on social media shows a young man in a black hoodie with his back against a chain-link fence, alongside a security guard and surrounded by bystanders screaming and swearing at him. “I’m sorry,” the man says, holding his hand to his head. Rai declined to comment on the video. Prime Minister Mark Carney canceled his first campaign event and two major rallies on the final day of the election campaign before Monday’s vote. “Last night families lost a sister, a brother, a mother, father, son or a daughter. Those families are living every family's nightmare,” Carney said. “And to them and to the many others who were injured, to the Filipino Canadian community, and to everyone in Vancouver, I would like to offer my deepest condolences."