UPDATE | 23 yr old woman charged with impaired driving after house explosion in London, ON

london house

Dozens of displaced residents don't know when they'll be able to return to their homes in southwestern Ontario after a explosion last night caused a massive fire that raged into this morning.

Officials in London, Ontario say a vehicle slammed into a home, hitting a gas line and causing an explosion that levelled the home and damaged about seven others.

The home was empty at the time, but seven people were taken to hospital including a firefighter who is in serious condition.

Police say 23-year-old Daniella Alexandra Leis was charged with impaired driving.