Updated

A former Chinese official who publicly accused Communist Party investigators of physically abusing him has been detained and a second who complained of brutality said authorities are investigating him.

The two officials were among four party members who broke with the ruling party's intense secrecy and told The Associated Press this year they suffered months of abuse while detained in separate cases in 2011-12.

The ruling party, which is in the midst of its most extensive anti-corruption campaign to date, is sensitive about allegations its investigators use torture to extract confessions.

One of the ex-officials, Xiao Yifei, was detained Friday by authorities in a county in central Hunan province. The other, Zhou Wangyan, says authorities in a city in the same province are investigating him again.