The FBI has sought access to interrogate Mumbai [Images] terror attack suspects in Pakistan which has so far not agreed to it, US Ambassador [Images] to India David Mulford disclosed today.

Sleuths of the top US investigating agency have gone to Pakistan in this regard, he told PTI in an interview.

"They (FBI) have sought access to people who have been detained. As far as I know, that (access) has not been given.
We are waiting for it, (for) that element of cooperation (from Pakistan)," Mulford said on his last working day as the
American envoy.

The US Ambassador also disclosed that the FBI officials, who had spent time in Mumbai to help investigate the terror
attack in which 183 people, including six American nationals, lost their lives, were willing to testify at the trial against
the lone surviving terrorist Ajmal Amir Kasab [Images].

"My understanding is they (FBI) will be prepared to testify," he said when asked whether the sleuths would depose in the case.

 Noting that the FBI had cooperated for the first time with Indian agencies in a terror investigation here, Mulford said the American sleuths directly interacted with the Mumbai police and worked with them in an "open and transparent fashion".

 Underlining that FBI used high quality technology to probe the attack case, he said "the evidence we gathered has high credibility and once it was passed to Pakistan and other countries who were adversely affected, people had to pay serious attention".

He said the evidence was "very very compelling" to emphasise the point that the terror attack was "planned in Pakistan, it was managed from Pakistani territory, the people came from Pakistan and all that is very very clear."