LONDON, Ont. - Police in southwestern Ontario say they are investigating after a vehicle slammed into a home, causing a major explosion.

London police Const. Shayna Boland says the crash happened in the city Wednesday just before 11 p.m.

She says investigators believe the vehicle also hit a gas line that caused the explosion.

Boland says two officers were sent to hospital with minor injuries and two fire fighters were also in hospital being assessed.

Police say houses on the street, as well as those in a one-block radius, were evacuated.

They say the massive fire is still active and has spread to several houses.

Boland says a female was taken into custody.

She says investigators expect to be on scene for several days.

The Canadian Press. All rights reserved.