Pakistan on Friday said the charge by India that the Mumbai serial blasts were backed by elements across the border was 'unsubstantiated' and wanted the peace process to be carried forward.

"These allegations are unsubstantiated we have already rejected them," Pakistan Foreign Office spokesperson Tasnim Aslam said.

She was responding to Prime Minister Manmohan Singh's [Images] remarks in Mumbai that the blasts were carried out by terror modules 'instigated, inspired and supported by elements across the border'.

On the prime minister's comments, she said, "Terrorism is a phenomenon that affects every country ... and all countries of South Asia as well...

Pakistan strongly and unequivocally condemned (the Mumbai blasts), including at the highest level of the president and the prime minister."

On India's decision not to go ahead with the foreign secretary-level talks slated for next week, Aslam said, "We have not been informed by India."

Asked about the peace process, she said: "It is a separate matter... It is in the interest of both India and Pakistan and the region, and that is why we believe that the peace process must be continued and carried forward."

Pakistan, she said, "has offered to help India with the investigations into the Mumbai blasts, if required, on the basis of specific information... we have not been provided any information nor our help has been sought."