Boston Police Superintendent Bruce Holloway has been put on administrative leave for a second time as the department investigates allegations against him from a former girlfriend.

According to a spokeswoman for the department and Holloway’s attorney, Timothy M. Burke, Holloway was put on leave with pay today. Holloway earned $150,000 in fiscal 2009 and is currently the superintendent in charge of the Bureau of Investigative Services, which makes him chief of the city’s 280 detectives.

Burke said Holloway had dated the woman for about a year and broke up with her in August. Since then, he said, she has sought – and been denied — a restraining order in South Boston Municipal Court. Holloway, however, has been granted a restraining order against her, he said.

Burke also said the woman has sought restraining orders against other people — and has also been the target of restraining orders from other people — prior to her breakup with Holloway.

Burke declined comment on the reason for Hollway was placed on paid leave a second time.

“We’re not going to comment on it. It’s an Internal Affairs Division investigation,’’ said Burke. “He denies any and all allegations she has made now, in the past, or given her history, any time in the future.’’