The Queensland Police Service said Inspector John Bosnjak, the brother of police commissioner Katarina Carroll, faces allegations of drink-driving while off duty.

In response to the succession of allegations against its staff, police said only an extremely small number of its 15,000-strong workforce are ever the subject of serious allegations of misconduct.

Being stood down does not mean allegations against an officer have been substantiated, police said.

The latest allegation, announced on Thursday, involves a male senior sergeant from Operations Support Command, who is facing domestic violence allegations.

On Wednesday, a male senior constable from the Northern region was also stood down over domestic violence claims, and a female officer from the same region was stood down for alleged drink-diving while off duty.

That same day, a male staff member from the Northern region was suspended amid accusations of domestic violence and sexual misconduct.

On Tuesday, Insp Bosnjak was stood down after he was allegedly caught drink-driving while off duty. He is expected to appear at Holland Park Magistrates Court on September 17.

On Monday, a senior constable from the Brisbane region, aged in his 30s, was stood down amid an investigation into improper sexual conduct involving a member of the public.

Queensland police said while two officers and a staff member from north Queensland faced allegations, no issue specific to the state's north had been identified.

"From time to time, officers have been the subject of allegations of drink-driving and domestic violence," Queensland Police Service said in a statement.

"When these matters are brought to the attention of Ethical Standards Command, they are dealt with appropriately."

Australian Associated Press