The Scottish Fire and rescue Service said the cause of fire was not yet known.
BBC: Firefighters tackle blaze at Stirling Superglass factory
Fire investigators are searching for evidence to establish the cause of the fire, which broke out shortly before 1330 GMT.
The westbound lanes of the bridge were closed as officers investigated the cause of the deadly fire, but the patrol said one lane of traffic reopened early Sunday.
The Fire and Rescue Service has returned to the scene to begin an investigation into the cause of the fire, but said earlier it did not believe there were any suspicious circumstances.
Harriet Harman, the area's MP, said there would have to be a thorough investigation into the cause of the fire and whether the prevention was adequate.
Though the investigation into the cause of the fire in one of the ship's two engine rooms is just beginning, Cuty said it appears that the fire suppression worked as it was designed to do.
The 787's chief engineer said Wednesday that he has "extreme confidence" in the Dreamliner Boeing's nickname for the plane even as federal investigators try to determine the cause of the fire on board an empty, parked Japan Airlines plane on Monday in Boston.
West Bengal Chief Minister Mamata Banerjee said police and fire officials have been ordered to investigate the cause of the fire and submit their reports within three days.
The spokesman said an investigation has been launched to establish the exact cause of the fire.
The expert said a degraded capacitor, a circuitry component used in various electrical appliances, was the likely cause of the fire.
The initial cause of the fire can be something as simple as a discarded cigarette butt or a charcoal barbecue left unattended on a balcony.
The NTSB, which is investigating the Boston incident, hasn't yet determined the root cause of the fire and may never be able to do so.
Despite the police investigation being reopened after 16 years and two inquests, the precise cause of the fire has never been established and nobody has ever been charged in relation to the blaze.
BBC: Did the New Cross fire create a black British identity?
The airport itself points to problems with the fire safety system as the immediate cause of the delays: The fire safety system incorporates some 75, 000 sprinklers, but computer programming glitches mean it's not clear whether all of these sprinklers would spray enough water during a fire.
The cause of the fire, which damaged the basement and first floor, is under investigation.
The cause of the fire is under investigation, but authorities believe lightning is to blame.
He added that a full investigation was under way to establish the cause of the fire.
BBC: Firefighters tackle blaze at Stirling Superglass factory
But the cause of the fire that crippled the Triumph is still under investigation.
An investigation into the cause of the fire has begun but it is not thought to be suspicious.
Officials said investigators were "leaving no stone unturned in their efforts to establish the cause of the fire".
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Detectives are investigating but said the cause of the fire at Stroud School in Highwood Lane was not yet known.
No casualties were reported and the cause of the fire in West Street, reported at 11:20 GMT, is being investigated.
The Coast Guard and the National Transportation Safety Board launched an investigation into the cause of the engine room fire.
Authorities said the cause of the fire was being investigated, but some protesters called for an independent investigation, it said.
The cause of the fire, which started shortly before 15:00 GMT, is believed to have been an electrical fault, firefighters said.
It could take up to a year to determine the cause of the fire, however, because of the amount of work involved.
An investigation is under way to determine the cause of the fire.
Japan Airlines confirmed the cause of the fire in a news release.
The cause of the fire, which happened in the workplace, is under investigation but is not thought to be the result of enemy action.
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