A U.S. drone aircraft has crashed at an airport in the Seychelles.

The U.S. embassy in nearby Mauritius says the remote-controlled MQ-9 aircraft crashed Tuesday while trying to land at the Seychelles International airport on the island of Mahe.

An embassy statement says no one was injured.

The embassy did not comment on the plane's mission and said the cause of the crash was unknown.

The U.S. military has operated a small fleet of drones out of the Seychelles since 2009 to monitor Somali militant group al-Shabab and other groups liked to al-Qaida.

Last week, Iran announced that it downed a U.S. drone in the eastern part of the country near the border with Afghanistan.