A Wannanup man who pleaded guilty in Mandurah Magistrates Court on Tuesday to child sex offences involving his sister was remanded in custody to face a Perth court in September.
The 18-year-old, who cannot be named, will be sentenced on two counts of indecently dealing with a child under 16 who is a lineal relative, and two counts of indecently recording a child who is a lineal relative.
Two other charges of sexually penetrating a child over 13 and under 16 will also be heard in the Perth court.
The offences happened in January, February and April of this year at what is understood to be the family home.
The man, who has been in custody since April, showed no emotion.
His parents were in court.
The man's next appearance will be at Perth Magistrates Court on September 2.
