ISTANBUL (Reuters) - Turkish Muslim preacher Fethullah Gulen, who Ankara says was behind a 2016 failed coup, has died in the United States where he was based, broadcaster NTV and other Turkish media said on Monday.

The reports could not immediately be confirmed.

Gulen built a powerful Islamic movement in Turkey and beyond but spent his later years accused of orchestrating an attempted coup against Turkish leader Tayyip Erdogan, accusations which he denied.

(Reporting by Daren Butler; Editing by Shri Navaratnam)