Four West Australian police officers are being investigated over allegations they misused Tasers on colleagues during an apparent initiation ritual.

Internal Affairs launched an investigation two weeks ago into claims officers within a particular team at Rockingham Police Station, south of Perth, were misusing Tasers on some of their uniformed colleagues.

A Sergeant and a Senior Constable have been stood down from duty and two Constables have been stood aside pending the outcome of the investigation.

It is understood the Tasers delivered a shock but the probes were not used.

The WA Police Union's Russell Armstrong says he is disappointed but the union is supporting the four officers in their efforts to save their jobs.

It is believed there were multiple victims and it was part of the culture within the team not to make a complaint.

The West Australian police service was the first in the country to give every officer access to stun guns.