Puerto Rico’s National Guard was deployed to help fight a large fire at a landfill in the U.S Virgin Islands that has been burning for more than a week and which has forced schools and businesses to close, officials said Friday.

Helicopters swooped down to gather seawater and help battle the blaze at the Bovoni landfill on the island of St. Thomas, which prompted U.S. Virgin Islands Gov. Albert Bryan to declare a state of emergency this week.

Puerto Rico’s National Guard said it supplied 60,000 gallons of water during its mission. Meanwhile, the U.S. Virgin Islands National Guard dropped more than 11,000 gallons of water on the fire.

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Puerto Rico’s National Guard was deployed to fight a large landfill fire in the U.S. Virgin Islands.  (Fox News)

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The Virgin Islands Daily News, a local newspaper, reported that the fire began spontaneously on Sept. 14 in an area of mulched vegetation that was collected after hurricanes Irma and Maria struck the region in 2017.

Officials have told residents near the landfill to stay indoors, and have warned of possible water contamination