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Venezuela refinery blast death toll rises from 39 as fires spread to third storage tank.
The death toll from an explosion at Venezuela's largest refinery rose to 48 on Monday as the fire it sparked spread to a third storage tank.
The higher death told was announced by Falcon state Gov. Stella Lugo during remarks to Venezuelan radio station Union Radio, according to The Associated Press.
More from GlobalPost: Venezuela refinery blast kills at least 39 (VIDEO)
An estimated 150 people were injured when a gas leak ignited the blast early Sunday, and 33 of them remained hospitalized Monday, the AP reported.
Officials said the Amuay refinery was expected to reopen Tuesday, although fires were still burning Monday and spread to a third storage tank.
The cause of the blast is still under investigation, although nearby residents told the AP they noticed a strong odor of sulphur hours before the explosion shook their windows and leveled some buildings.
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Venezuelan leader Hugo Chavez angrily denied claims that early warning systems failed, according to The Guardian.
He declared three days of national mourning for the victims and ordered an "urgent investigation," BBC News reported.