A St John Ambulance triple-zero call-taker has been charged after allegedly relaying details of traffic crashes to people in the towing industry.

Key points: The charges against three people resulted from an internal police investigation

The charges against three people resulted from an internal police investigation Pippa Clinch appeared in court and was not required to enter a plea

Pippa Clinch appeared in court and was not required to enter a plea A police spokesman said the allegations hurt the image of emergency services

A 42-year-old Perth woman, Pippa Jay Clinch, is facing 12 counts of disclosing official secrets.

Two other people, a 35-year-old woman from High Wycombe and a 42-year-old Southern River man have also been charged with the same offence and are due to face court next month.

The charges result from an internal police investigation.

Ms Clinch made a brief appearance in the Perth Magistrates Court today and was not required to plead to 12 charges.

She was released on bail until she appears in court again next month.

Pippa Jay Clinch allegedly passed information from triple zero calls on to towing operators. ( ABC News: Hugh Sando )

Damage to emergency services image

Superintendent Darren Seivwright told ABC Radio Perth the woman allegedly sourced the information from a secure police database and received payment for it.

"All of the information that we hold here at WA Police has the personal information of everybody in Western Australia on it, and it's therefore considered to be an official secret," he said.

"The allegation is that one of our employees used that information to gain a personal benefit.​"

The woman allegedly passed on details of traffic crashes to tow truck companies. ( ABC News: Grant Wynne )

Superintendent Seivwright said the allegations had hurt the image of the emergency services.

"The reputational damage that allegations like this cause for the broader group of people that are employed by WA Police, who do an outstanding job and properly and appropriately guard the official secrets that they use during their normal employment, it's really disappointing.​"

An employee at the WA Police Assistance Centre, which handles both emergency and non-life-threatening calls, was charged with corruption in January.