Gulen split from Erdogan over a corruption scandal in 2013 but had previously been one of Erdogan's closest supporters.
Speaking from the US, and in response to Erdogan's accusation against Gulen, Alp Aslandogan, media adviser to Gulen said, "The Turkish government hasn't produced anything. Thank God, this is a country of laws, and we depend on that."
"The coup appears to be poorly planned," he said, "very poorly executed and everything seems to be playing into ErdoÄŸan's hands. There are many big question marks of how [this attempted coup] was executed."
Gulen has rejected all accusations that he was behind the coup attempt.
Who is behind the coup?
Gulen has claimed Erdogan used the failed coup to set up a dictatorship.
"I don't believe that the world believes the accusations made by President Erdogan," Gulen said. "There is a possibility that it could be a staged coup and it could be meant for further accusations [against Gulen and his followers]."
Erdogan may have staged the attempted uprising himself to justify civil rights clampdown, and his promise to purge the state institutions of the 'virus' of Gulen-inspired ideology lends credence to the notion.
Erdogan succeeded in turning Turkey into a repressive state domestically and isolated state internationally.
Kidnapping Turkish citizens abroad (rendition)
After the attempted coup, Erdogan intensified an expansionist foreign policy, sending troops to Syria, Iraq, and Libya.
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