Tiah's foster brother gets sentencing date

Ed Jackson
AAP

The foster brother accused of having a sexual relationship with slain Brisbane schoolgirl Tiahleigh Palmer will be sentenced next month.

Trent Jordan Thorburn, 20, will face a sentencing hearing at the Beenleigh District Court on September 14 on charges of incest, perjury and two counts of attempting to pervert the course of justice.

Thorburn did not appear during an indictment presentation on Friday where the date for his sentencing was set.

Police allege Thorburn had been having sex with 12-year-old Tiahleigh while she was in the care of his family.

The body of the Marsden State High School student was found on the banks of a Gold Coast river on November 5, 2015, six days after police allege she was murdered at the Thorburns' Chambers Flat home.

Trent's older brother Joshua was sentenced to three months' imprisonment last month after pleading guilty to charges of perjury and attempting to pervert the course of justice.

His mother Julene will be sentenced in the Beenleigh District Court on November 3 for the same offences.

His father Rick has been charged with Tiahleigh's murder and committed to stand trial at a date to be notified.