Seattle Mayor Ed Murray, a Democrat, announced Tuesday he is resigning after allegations arose that he sexually assaulted his younger cousin in the 1970s.

This would be the fifth instance where a man has publicly accused Murray, who is openly gay, of sexual abuse.

"While the allegations against me are not true, it is important that my personal issues do not affect the ability of our City government to conduct the public's business," Murray said in a statement.

Murray's cousin, Joseph Dyer, claims Murray forced him to have sex when they shared a room together at Dyer's mother's home in Medford, N.Y, according to the Seattle Times. Dyer said he was 13 when this occurred.

Murray said the claims were not true. He said the families were estranged and likely harbored negative feelings.

The scandal had already prompted Murray to opt not to seek re-election, but until Tuesday he had declined to resign.

His resignation is effective starting Wednesday afternoon. City Councilmember Bruce Harrell will take Murray's place and has five days to determine if he will fill the position until the end of the term.