A container ship anchored at Dubai's huge port exploded into flames which sent tremors across the commercial hub of the United Arab Emirates.
The Twitter post from Dubai's state-run media office said a fire was reported to have erupted on a ship at the Jebel Ali port and that a team of firefighters was working to control the blaze.
Officials have said there were no immediate reports of casualties.
The extent of the damage caused by the explosion to the port and surrounding cargo was not immediately clear.
People in Dubai recording with their phones from their high-rises posted frantic videos on social media showing a fiery ball illuminating the night sky.
Witnesses reported shaking buildings across the city. Residents of neighbourhoods as far away as 25 kilometres (15 miles) felt the blast around 11.45pm Associated Press journalists felt the blast rock the glass windows of their apartments.
The Jebel Ali port in Dubai is one of the largest in the world and the largest in the Middle East and it serves cargo from the Indian subcontinent, Africa and Asia.
The port, operated by DP World, has four sprawling container terminals that can berth some of the world’s largest ships.