Police and fire officials are investigating a deadly blaze that broke out at the Vancouver home of an elderly bus fall accident victim as her family gathered to mourn her.

Naranjan Dhesi was heading to an annual seniors trip organized by the Ross Street Sikh Temple and was trying to board the bus when she lost her footing and fell at around 9 a.m. PT on Saturday.

Temple president Sohan Deo says Dhesi was dragged as many as six metres when the bus rolled backwards.

Paramedics initially thought Dhesi only had minor injuries, but she died en route to hospital. Police continue to investigate her death.

Fire breaks out at victim's home

Later in the day just before 5 p.m. PT, when as many as 20 people gathered in the Dhesi home in the 900 block of East 63rd Avenue, a fire broke out in a basement rental suite.

When firefighters extinguished the blaze, they found a body in the basement

Officials say the victim, who has not been identified, is unrelated to the Dhesi family. Investigators are still trying to determine the cause of the fire.

On Sunday, there was a heavy police presence around the Dhesi home. Uniformed and plain clothes officers were knocking on neighbours' doors to ask questions and take statements.

An arson investigator was seen going through garbage bins in a nearby alley. 

Police said they they are treating the fire as a crime until they know otherwise.

"It's very sad for the family, for us right. It's a very hard time," said Harpal Bagri, a nephew of the victim.

With files from CBC's Lisa Johnson