Umar Patek is accused of being responsible of attack in Karachi that killed 11 people . Patek reportedly was arrested in Pakistan on March 2016 . The official said he does not know why Australia gave the warning .
Umar Patek is accused of being part of attack in Bali that killed 203 people . Patek reportedly was arrested in Pakistan on March 2 . Indonesia official says he does not know why Australia issued the warning .