Vancouver’s Filipino community has been left in shock and mourning after a car ramming attack left 11 people dead on Saturday.

The attack, which took place at the annual Lapu Lapu festival which celebrates Filipino culture, also left dozens wounded.

The event’s organisers said the city’s tight-knit Filipino community is “grieving” and that the attack’s impact will be felt for years to come.

A 30-year-old suspect – who police said has a history of mental health issues – has been taken into custody.

Police have yet to reveal a motive for the attack, but said they do not believe it was an act of terrorism.

The attack took place at approximately 20:14 local time on Saturday (03:14 GMT) at East 43rd Avenue and Fraser in the south of Vancouver.

At the scene on Sunday, people began laying flowers and paying their respects.

One woman doubled over sobbing before walking off. Another woman, named Donna, said she lived in the neighbourhood for more than 50 years.

She was at the festival and said it was packed with young people and families.

“People were here to celebrate and have fun,” she told the BBC. “This is tragic.”

Speaking at a news conference the following day, RJ Aquino, the head of the Filipino BC organisation, said that “last night was extremely difficult and the community will feel this for a long time.”

“We know that there’s a lot of questions floating about and we don’t have all the answers, but we want to tell everybody that we’re grieving,” he added.

Mr Aquino said that the attack caused considerable confusion and chaos in the city’s tight-knit Filipino community, with many residents calling one another to check on their loved ones.

“I don’t think my phone has buzzed that much in my entire life,” he said. “There was a lot of panic and, you know, relief, when somebody answers.”

At a separate news briefing on Sunday, acting Vancouver police chief Steve Rai said it was the “darkest day” in the city’s history.

He said “dozens” of people were injured in the attack, some seriously.

“The number of dead could rise in the coming days or weeks,” he told reporters, adding that men, women and young people were among the victims.

The suspect – who has not been named – was taken into custody by police officers after being detained by bystanders at the scene.

While Rai declined to specify any potential motive, he said that he “can now say with confidence that the evidence in this case does not lead us to believe this was an act of terrorism.”

The suspect, he added, has “a significant history of interactions with police and healthcare professionals related to mental health”.

Formal criminal charges have not yet been filed.

The festival in Vancouver – home to over 140,000 Canadians of Filipino descent – takes place every year to commemorate Lapu-Lapu, a national hero who resisted Spanish colonisation in the 1500s.

Tens of thousands of people were in attendance at the event.

According to Rai, police had conducted a threat assessment ahead of the festival, and had partially closed a road on a street behind a school where the bulk of the festivities were taking place.

There was nothing to indicate a higher threat level for the event, he added.

The street where the attack took place was largely being used by food trucks and there were no barriers in place.

Rai said that the incident would be a “watershed moment” for city officials and first responders.