A woman from Adelaide’s western suburbs has been arrested over what police have described as historical child sex offences.

Special Crime Investigation Section detectives arrested the 63-year-old woman on Wednesday.

She was charged with four counts of unlawful sexual intercourse and one count of maintaining an unlawful sexual relationship with a child.

The woman has been bailed to appear in the Adelaide Magistrates Court in August.

Police said the arrest was “in relation to historical sexual offences against children” that allegedly occurred in the 1990s.

Detective Senior Sergeant Amanda Lewis urged anyone with information to contact police.

“South Australia Police strive to ensure the protection of children from child exploitation,” she said.

“Anyone in the community who needs to access support is encouraged to visit the ACCCE [Australian Centre To Counter Child Exploitation] website — www.accce.gov.au — for a full list of available support services with contact details.”

Police said anyone who could assist with the investigation could contact Crime Stoppers online or 1800 333 000.