Turkish police arrested 35 people on Saturday as part of a probe into the Gülenist terror cult (FETO), a police source told Anadolu Agency.

Early Saturday, the Istanbul Chief Public Prosecutor's Office issued 55 arrest warrants for suspects accused of being part of the FETO network and of financing the group.

Among those arrested were businessmen and air traffic controllers. An operation to apprehend the remaining 20 suspects is still underway, according to the source who spoke on the condition of anonymity.

On July 15, a military junta loyal to FETÖ, led by US-based Fetullah Gülen, carried out a bloody coup attempt, killing more than 240 people and injuring nearly 2,200.

The defeated coup attempt left 248 people killed and nearly 2,200 injured.