Brisbane teacher Steven Kaiser has been charged with dozens more child sex offenses.

The former teacher has been charged with a further 32 historical child sex offences, with the latest charges coming since his first arrest two months ago.

Police said the alleged victims attended two Brisbane schools where Stephen Patrick Andrew Kaiser worked between 1987 and 1992 and were aged between nine and 13 at the time.

The 69-year-old man was arrested for a second time at his south Brisbane home on Sunday and charged with a further 17 counts of indecent treatment of a child under 16, four counts of abducting a child under 16 for immoral purposes and 11 counts of conventional assault.

Kaiser, who retired in 2020 and was suspended by the Queensland College Teaching Council in 2022, already faces 49 similar charges, which police laid after one alleged victim made a formal report in June.

“I am grateful for the outstanding courage of all the surviving victims who have come forward,” said Detective Senior Sergeant Dina Geck of the Morningside Child Protection and Investigations Unit.

“Your bravery helps police bring criminals to justice and in turn gives other victims the confidence to come forward.”

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The schools are not named for legal reasons.

The police investigation was dubbed Operation Whiskey Mott.

A video of police searching Kaiser’s home in August showed officers rummaging through old computer equipment and storage drives.