The Pakistan-based official also sought Indian assistance for joint operations by Indian and US forces to nab the world's most wanted fugitive if he crossed over from northeastern Pakistan, the sources said.

The official's visit followed reported spotting of Bin Laden in northeastern Pakistan, close to the Pakistan-China-India border tri-junction, they added.

The sources said the FBI official met senior officials of the Research and Analysis Wing (RAW), Intelligence Bureau (IB), Border Security Force (BSF) and Indo-Tibetan Border Police (ITBP).

They said the FBI official appeared to have information about the impending release of the latest videotape by Bin Laden, carrying yet another warning against the US.