"There was an interview, even though of her family instead of Corby herself," Syamsuddin said. "Therefore we are trying to evaluate the degree to which the incident violated the requirements of the parole."
Agus said he visited Corby to check on her and inform her that her parole might be revoked because of her sister's interview with Australian Channel Seven.
"I felt our communication was not smooth and her body language indicated she was unstable," Agus said. He said Corby ran twice to the kitchen to hurt herself, but was stopped by her sister and prison officials.
"She does not want to return to prison," Agus said.
Corby's case drew intense interest in Australia, whose media were focused on Indonesia following the 2002 Bali nightclub bombings and an attack on its embassy in Jakarta in 2004.
Many people questioned the fairness of the trial and the length of her sentence compared to the jail terms received by some of those convicted in the Bali bombings.
At least two other Australians are on death row in Indonesian in drug smuggling cases, and several are serving long prison terms.
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-AP