Police have charged a woman from Kitchener in connection to a collision that resulted in a home exploding.
Officials say that Daniella Alexandra Leis, 23, from Kitchener, has been charged with impaired operation exceeding blood alcohol concentration and four counts of impaired operation causing bodily harm.
She has been released with a promise to appear in court on Sept. 4.
First responders were called to the scene on Woodman Avenue in London around 10:37 p.m. on Wednesday.
Emergency crews immediately detected the smell of gas and began evacuating nearby homes.
About 12 minutes after officials arrived, the house exploded.
READ MORE: 'The building blew sky-high': Witnesses recount massive explosion that destroyed London homes
Investigators believe a vehicle hit a gas line when it collided with a home, triggering the explosion.
Police say that no one was home at the time of the crash, but that a citizen and multiple first responders were injured.
EMS operations manager Adam Bennett says that a dozen units responded to the scene and assessed more than a dozen people.
"(We) transported seven people to hospital, including fire and police," he explains.
One of them, a firefighter, remained in hospital on Thursday in serious condition, though he was listed as stable.
Roughly 100 residences in the area have been evacuated, according to authorities.
Many people remained in their pyjamas into Thursday evening, unable to go home to get their belongings, but the Ontario Fire Marshall says some of the least-impacted residences could be occupied by the evening.
Emergency crews remain on scene for the investigation.
Police add that they expect investigators to be on scene for several days. The Ontario Fire Marshall has also been called to the scene.
