Police in the United Arab Emirates identified the dead as two Indian nationals and one Pakistani. It did not identify the wounded, who police said suffered minor to moderate injuries at an industrial area where Abu Dhabi's state-owned energy company runs a pipeline network and an oil tanker storage facility.
Three transport tankers caught fire at the facility, while another fire was sparked at an extension of Abu Dhabi International Airport.
Police said that while an investigation was underway, preliminary findings indicated there were small flying objects, possibly belonging to drones, that fell in the two areas and may have caused the explosion and fire. They said there was no significant damage from the incidents, without offering further details.
Meanwhile, Yemen's Houthi rebels claimed they were behind an attack targeting the United Arab Emirates on Monday, without immediately elaborating. The Iranian-backed Houthis have claimed several attacks that Emirati officials later denied took place.
The incident comes as Yemen's yearslong war rages on and as an Emirati-flagged vessel was recently captured by the Houthis. Although the UAE has largely withdrawn its own forces from the conflict tearing apart the Arab world's poorest nation, it is still actively engaged in Yemen and supports local militias there fighting the Houthis.
The airport fire in Abu Dhabi was described by police as "minor" and took place at an extension of the international airport that is still under construction. For years, the airport home to Etihad Airways has been building its new Midfield Terminal, but it was not clear if that was where the fire took place.
Etihad Airways said "precautionary measures resulted in a short disruption for a small number of flights" and that airport operations have returned to normal. Abu Dhabi Airports did not immediately respond to a request for comment.
The other blast struck three petroleum transport tankers near a complex for the Abu Dhabi National Oil Co. in the Musaffah industrial area. The company describes it as a pipeline and terminal facility located some 22km from the centre of the city of Abu Dhabi, where 36 storage tanks also supply transport trucks carrying fuel. It is also a short distance from Al-Dhafra Air Base, a military installation that hosts US and French forces.
The location of the ADNOC facility where the tankers caught fire is approximately 1800km northeast of Saada, the Houthis' stronghold in Yemen.
While Emirati troops have been killed in the war in Yemen, the conflict so far has not directly affected daily life in the wider UAE, a country with a vast foreign workforce that is also home to Dubai, a glitzy city of sky scrapers and five-star hotels.
