A West Australian police officer has been accused of multiple child sex offences over an alleged relationship he had with a 13-year-old girl.

Sex Assault Squad detectives charged the 48-year-old regional senior constable with 17 offences, including six counts of sexually penetrating a child aged over 13 and under 16 years.

It’s alleged the officer, who has been stood down, had a sexual relationship with the girl between 2009 and 2012.

Investigators said she was 13 when the interactions started.

The man’s charges include indecent dealing with a child and persistent sexual conduct.

He is scheduled to appear in Perth Magistrates Court on Tuesday.

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– AAP