The 4th anniversary of the Saudi-led military intervention in Yemen is marked by a rally by supporters of the Houthi movement.
Three people are reported to have died and six are injured in an attack in Abu Dhabi on Monday.
The attacks caused fires and resulted in three tanker explosions. According to WAM, the deceased are one Pakistani and two Indian.
The Abu Dhabi police said that the six wounded were suffering from mild and medium injuries.
The fires started in the industrial area of Musaffah and at a construction site near the airport in Abu Dhabi, according to the police. The authorities believe the attack was carried out by drones.
The cause of the fires may be small flying objects that fell in the two areas. The police statement said that teams from the competent authorities were dispatched and the fire was being put out.
The price of oil was not affected by the explosions, with international benchmark crude trading at around $85.89 per barrel in the hours after. The third-largest oil producing country in the world, the United States of America, is home to the vast majority of the state's crude.
The United States of America is the seventh-biggest oil producer, pumping over 4 million barrels of oil per day.
There were no significant damages from the two accidents, according to the initial statement.
The spokesman for the Yemen's Houthi movement said that it had launched a military operation in the Gulf sheikhdom and that it would reveal more details in the hours to come.
The war in Yemen began four years ago and has caused the country to be plunged into mass starvation, as well as fueling the proxy fighting between Saudi Arabia and Iran.
Abu Dhabi still wields significant influence among the forces of Yemen, who were forced out of Yemen by the Houthis.
Since Riyadh launched its aerial assault on Yemen, the Houthis have carried out thousands of cross-border missile and drone attacks into Saudi Arabia.