A former teacher at a private school in Perth has been charged with seven more offences relating to his alleged sexual abuse of students in the 1980s.
The 68-year-old was last week accused of raping a teenage girl and on Tuesday, was charged with four counts of indecent assault and three counts of defilement by teacher.
Police say the new charges relate to a second victim, who was aged 15 when the abuse first started in 1983. It allegedly continued till 1985.
The man's 72-year-old co-accused, who was a teacher at the same school, has been charged with three counts of indecent assault and one count of carnal knowledge of a female under 17 years by a guardian.
"They did work in conjunction with each other as far as grooming the girls," Detective Sergeant Roberta Richardson said last week.
The investigation is ongoing and detectives are urging anyone with any information about the case to come forward.
Both men are due to face court on July 28.