Kutbettin Gulen was detained by police acting on a tip-off at the home of a relative in the Gaziemir district of the western Izmir province, Anadolu news agency said.
He is the first of Gulen’s siblings to be detained after the coup bid.
He is accused of “membership of an armed terror group”, Anadolu said, without giving further details.
Kutbettin Gulen is currently being questioned by anti-terror police.
Source: AFP
