Turkish authorities today issued dozens of arrest warrants for staff in the judicial and prison systems, the latest swoop against suspects said to be linked to the alleged mastermind of the July 15 coup. <br/><br/>The state-run Anadolu news agency said, Istanbul prosecutors have sent out warrants for 87 people working in Istanbul courts and 75 wardens and other staff working in prisons. <br/><br/>There have been regular raids against staff suspected of links to the failed coup in courts but this is believed to be the first time that the prison system has been targeted. <br/><br/>Police raided Istanbul's main court in the district of Caglayan and also those in Gaziosmanpasa and Buyukcekmece in search of the suspects.<br/><br/>Those targeted are suspected of links to preacher Fethullah Gulen who had lived in self-imposed exile in the United States since 1999 and who Turkey accuses of being the coup mastermind. Gulen denies the claims.