Islamabad: As Foreign Secretaries of India and Pakistan grappled in New Delhi to finalise the structure of a joint mechanism on terrorism, Islamabad today said the best way to make it work was for both countries to make 'sincere' efforts to share information and pursue leads while avoiding 'non-serious' allegations.

On the Siachen issue, Foreign Minister Khurshid M Kasuri, who has been asserting for a while that a settlement on the matter was round the corner, admitted that there were some differences even though certain things have been done to narrow them down.

He said both nations share the 'common pain' due to terrorism and it is in their mutual interest to cooperate seriously to tackle this menace rather than levelling allegations against each other.

"We will have to focus on rare leads and both sides will have to avoid levelling non-serious allegations just for the sake of point scoring", Kasuri said in an interview to BBC here.

"In this way the joint counter-terrorism strategy between India and Pakistan can work efficiently," he said.

Responding to a question on India's allegations of Pakistan's involvement in Mumbai blasts, Kasuri said "We have waited (for evidence) for many months but in vain."

 He said "The Government and the people of India should know that Pakistan itself is a victim of terrorism. There was pain in India following Mumbai blasts and there was similar pain in Peshawar, Lahore, Rawalpindi, Quetta," state-run APP newsagency quoted him as saying.