TEHRAN — Iranian authorities have arrested three lawyers on their return home from abroad, local media reported Sunday.The arrests appear to be the latest chapter in the crackdown by authorities on dissidents and activists since the disputed presidential election in June last year.The reports say authorities detained Maryam Kianersi, Maryam Karbasi and Sara Sabaghian on their return home from Turkey Saturday. All three are women.The three were among signatories of an open letter in September that called for the release of prominent human rights lawyer Nasrin Sotoudeh.