The Ontario Fire Marshal's Office is now in charge of the scene on a quiet south Guelph crescent where an explosion levelled a house Friday afternoon.
Guelph Fire Chief John Osborne said outside of what remains of 32 Southcreek Trail Saturday morning that nothing is being ruled out but it could take some time to figure out exactly what happened.
"What we're waiting for right now is for the OFM engineer to arrive on scene," Osborne said.
"The OFM is the lead investigator and once everyone is here then we're going to very meticulously start pulling the house apart and removing the debris in order for us to try and find out what happened," he said.
Ontario Fire Marshal investigators were on scene Friday night and Saturday morning.
A backhoe was parked nearby ready to start peeling back layers of wood, drywall and belongings. The OFM was also using a drone to take footage from above the property as part of its investigation.
On Friday, a man who was one of the first on the scene following the explosion said the smell of gas was strong in the air immediately after it happened, but Osborne said all possibilities will be investigated.
"Everything is on the table right now," Osborne said.
"As the building is deconstructed we can see how and which way things are ending or twisted and the OFM can start to arrive at some conclusions."
"This could be two or three days just to do the deconstruction," the fire chief said.
The incident occurred around 1:30 p.m. Friday on a quiet cul-du-sac that runs off Edinburgh Road South, just south of Kortright Road.
Miraculously, the lone occupant of the house emerged from the rubble relatively unscathed, although Osborne said Saturday morning that she remained in hospital with non life-threatening injuries.
Also uninjured was her dog Dudley, although it had to be retrieved from the rubble after it escaped a neighbour's arm following the blast and tried to return home.
Gas and electricity have been restored to the street and other than the two adjacent homes, which suffered some damage, people have been allowed to return to their homes.
