Geneva: The US investigators have zeroed in on a Pakistani national who is suspected to be a key link between LeT operatives David Coleman Headley and Tahawwur Hussain Rana about whom India is expected to know in a week whether they were involved in Mumbai attacks.
The US also believes some elements in ISI could be linked to Headley, while agencies in India have been suspecting that the two LeT operatives could have been involved in the Mumbai attacks.
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There is no evidence so far to link the duo with the 26/11 attack, sources said.
India and the US are in constant touch on the Headley case and Washington has conveyed that within a week there could be "authentic" information whether they were involved in the 26/11 attacks, sources said.
A Pakistani national believed to be a common link between the LeT handlers like Zaki-ur Lakhvi and the two terror suspects detained by the FBI has been identified and probe on him is expected to reveal whether Headley and Rana had any role.
