A total of 16 suspects including two nephews of the US-based Islamic cleric Fethullah Gülen were detained as part of an investigation into the Gülen movement, which the government accuses of attempting a military coup on Friday.

Gülen’s relatives A.G. and R.G. were rounded up in a Trabzon-based police operation that also included raids in 4 other provinces.

Turkey experienced a military coup attempt on July 15 that killed over 240 people and wounded more than a thousand others. Immediately after the putsch, the Justice and Development Party (AK Party) government along with President Recep Tayyip Erdoğan pinned the blame on the Gülen movement.

Under detention since Jan. 6, Fethullah Gülen’s another nephew, identified only by initials M.A.S., were arrested on Feb. 2.