Pakistan's top civilian security official said Thursday that the Mumbai attacks were partly planned in Pakistan and that several of the known suspects are being held. It was the first time Pakistan has acknowledged the conspiracy behind the attacks may have originated in any form on its soil. It has already acknowledged the sole gunman captured alive was Pakistani. Interior Ministry chief Rehman Malik made the comments during a briefing on a probe into the attacks. The November assault on India's commercial capital killed 164 people. India says all the 10 gunmen were Pakistani.