(Reuters) - A U.S. Navy vessel fired on an approaching fishing boat off the United Arab Emirates on Monday, killing an Indian national and seriously injuring three others, the UAE's state news agency (WAM) said.

The firing has led to the death of one Indian national and serious injury of three Indian nationals, Tarek al-Hedan, an aide to the foreign minister for political affairs told WAM.

He said that authorities in the UAE are investigating the matter.

A U.S. defense official told Reuters the boat was believed to have sped away after being fired upon by the crew aboard the USNS Rappahannock, according to an initial report.