Speaking in an interview to TV news channel, Chidambaram said, "When we say he could be an Indian, he could be somebody who acquired Indian characteristics."
"He could have been infiltrated into India and lived here long enough to acquire an Indian accent, familiarity with Indian Hindi words or he could be somebody who exfiltrated from India to Pakistan and was adopted by the militants there," Chidambaram said.
However, Home Minister refused to speculate on the name of the handler.
"We know him by Abu Jindal that something we have known for many months now... but he is not Abu Jindal. That is not his real name. We cannot put a finger who he is, unless we get a voice sample. And they won't give us voice sample."
"There is a speculation that Abu Jindal could be A, Abu Jindal could be B....but how as a Home Minister I can speculate I can't speculate," he added.
Nine out of the ten terrorists were killed during the Mumbai terror attack on Nov 26, 2008.