How did that fire spark the massive explosion that tore through the northern part of town -- killing 14 people, including nine first responders, and injuring hundreds of others?

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Later Monday, an explosion was heard in Belgrade after nightfall, and anti-aircraft fire lit up the skies.

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The judge also agreed to rule out punitive damages against Cameron International, the manufacturer of the blowout preventer on the ill-fated Deepwater Horizon rig, which was rocked by an explosion and fire in 2010 that killed 11 workers and touched off the enormous spill.

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Investigators are trying to determine whether the explosion was gas-related, said Robert Kuehn, an inspector for the Brentwood Fire Department.

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