Canberra, Feb 15: Australian Prime Minister Malcolm Turnbull on Thursday announced a ban on sexual relationships between ministers and staffers, a measure taken after a scandal involving his deputy rocked the tion. Turnbull condemned Barby Joyce for a “shocking error of judgment” over an affair with his former media adviser Vikki Campion, with whom he is expecting a child, the BBC reported. “I have today added to the standards to make a very clear and unequivocal provision that ministers, regardless of whether they are married or single, must not engage in sexual relations with staff. Doing so will constitute a breach of the standards,” said the Prime Minister. Joyce will take a leave of absence from Monday amid scrutiny over whether he breached ministerial standards.