US-based Turkish scholar Fethullah Gulen had a “rocket-resisting” building near İstanbul’s famed Çamlıca hills, where he consistently “monitored his followers with a telescope,” the pro-government daily Sabah reported on Saturday.

According to the report, Nurettin Veren, an informant who turned against Gülen, claimed that the building was Gulen’s “secret place” to live and give instructions to the people affiliated with Gulen Movement. Veren argued that Gülen was given a telescope as a gift, which he late used to monitor followers on the pretext of “watching stars on the sky.”

Veren also claimed that Gülen invented curtains “made of water droplets” to maintain sound insulation and the building was covered with “rocket- resisting glass.”

Gülen has been in self-imposed exile from his country since 1999. Turkey survived a military coup attempt on July 15 that killed over 240 people and wounded more than a thousand others. Immediately after the putsch, the AKP government along with President Recep Tayyip Erdoğan pinned the blame on the Gülen movement.

Gülen and the movement deny the accusations.