An official of the Obama administration, asserting that the US was aware of Indian concerns about the terrorist infrastructure in Pakistan, on Saturday said that it was "very important" for Islamabad to rein in the Lashkar-e-Taiba (LeT), a terrorist group that has "global ambitions" and has been targeting Americans as well.

Assistant Secretary of State for South and Central Asian Affairs Robert O. Blake told reporters, "It is very important for Pakistan to take on Lashkar-e-Taiba threats, not only for the US but for India and other countries."

After addressing the Asia Society Corporate Conference, Blake was speaking at a news conference.

There was growing concern in the US that the LeT, based in Pakistan, has "global ambitions and presence", he said.

Blake, who will also travel to Afghanistan and Pakistan, his first official trip as assistant secretary, said, "It is targeting Americans... I will discuss this with Pakistani (authorities)."

In Delhi, he will meet Indian and American business representatives and have discussions with his counterparts in the ministry of external affairs to prepare for the US-India strategic dialogue between External Affairs Minister S. M. Krishna and Secretary of State Hillary Clinton later this year.

He was in India also to prepare the ground for President Barack Obama's visit later this year, "for which I don't have the exact dates", Blake further added.

In Pakistan, he will meet with officials, civil society representatives, religious leaders and business representatives in Islamabad, Karachi and Lahore. (With Inputs from Agencies)