Kerry commended Sharif's pledge to not distinguish between terrorist groups and "urged additional action against the Haqqani Network and Lashkar-e-Tayyiba," State Department spokesman John Kirby said following the two leaders' meeting in New York on sidelines of the UN General Assembly session.
"He acknowledged the crucial role Pakistan has played in Afghan reconciliation talks and noted the importance of dialogue with India for fostering regional stability and economic integration," Kirby said.
The two leaders discussed topics of mutual interest including counterterrorism, Afghan reconciliation, regional stability and economic cooperation, he said.
The banned Lashkar-e-Taiba terrorist group carried out the audacious 2008 Mumbai attack that killed 166 people.
The Haqqani network, founded by Jalaluddin Haqqani, has been blamed for the Indian embassy bombing in Kabul in 2008 that left 58 people dead, a 2011 attack on the US embassy in Kabul, and several big truck bombing attempts in Afghanistan. It was designated as a terrorist organisation by the US in September 2012.