A Queensland police officer has been stood down from normal duties over allegations he urinated on a poker machine on the Sunshine Coast.

The offence is alleged to have happened at the Alexandra Headlands nightclub on Wednesday night, when a group of off-duty police officers were socialising together.

Deputy Police Commissioner Ian Stewart says the officer has been stood down and will conduct non-operational duties until the investigation is completed.

"The allegation targets a specific officer but I know there were other officers allegedly off-duty at the time at the premises," he said.

The conduct of the Sunshine Coast constable is being investigated by senior officers in his region.

Police Ethical Standards Command and the Crime and Misconduct Commission have also been advised.

Police are asking anyone with information about the incident to contact CrimeStoppers.

Car chase

In a separate investigation, a senior Brisbane police officer has also been stood down after he was allegedly caught driving at high speed during a car chase,

Senior police say the public has a right to be shocked after the officer was allegedly caught driving more than 200 kilometres an hour during a pursuit north of Brisbane nearly a fortnight ago.

A senior sergeant from the Metropolitan North Region has been stood down after the apparently unauthorised chase on the Bruce Highway.

Deputy Police Commissioner Ian Stewart says the Ethical Standards Command is investigating the incident.

He says it is a very serious matter when an officer is caught driving at high speed.

"I think any member of the community would be shocked by that speed," he said.