Electrical engineers are facing jail after a petrol pump explosion that killed two people and injured more than 100.
The blast took place in a residential neighbourhood of the city of Chichester in Somerset on Friday.
Police are investigating the cause of the explosion.
The explosion happened at about 3.30pm (1430 GMT) in a building in the area of the garage used to store and store oil.
The bodies of the two people killed were identified by the coroner, who said they were from the same family.
The other person who was injured was in a stable condition in hospital.
Investigators said the explosion happened when the oil pump was left running for long periods.
They are now looking into whether a gas leak occurred in the building and if there was any evidence of the cause.