A senior constable from the Darling Downs has been given managerial guidance after drunkenly taunting a nude offender in custody last year.

The offender was brought into the Stanthorpe station naked on a public nuisance charge on March 9, 2014 and was given a blanket by police.

The senior constable, who was off duty at the time but at the station, admitted to holding a traffic cone to his groin and thrusting it towards the offender.

ABC News obtained a copy of the internal report which found the senior constable was intoxicated at the time.

After more than a year of investigating, Assistant Commissioner of the Southern Region Tony Wright substantiated the claims and assigned the officer to "receive managerial guidance where he will be reminded of the standard of behaviour expected of an officer".

The incident was brought to the attention of management after a complaint by the senior constable's colleague.

Another officer at the same station has also received managerial guidance after a separate internal report found he made fun of Asian people.

That investigation found the sergeant "is insulting and rude to Asian persons, making inappropriate comments to them".

He was also asked to complete additional training via the Competency Acquisition Program as "further reinforcement".

A Queensland Police spokesperson said the matter was investigated and they had substantiated the allegations.

"Disciplinary action has been taken in accordance with service policy," the spokesperson said.

"The Queensland Police Service does not condone inappropriate behaviour by its members either on or off-duty and expects all members to behave to high standards at all times."