Prime Minister Manmohan Singh will not celebrate his 81st birthday in wake of the twin terror strikes in Jammu on Thursday morning, which have left nine dead so far.
Singh, who had made a night halt at Frankfurt, left for Washington, where he will meet the US President Barrack Obama on Friday.
Singh, who prefers to avoid birthday celebrations, has in the past reluctantly agreed to cut the cake on board whenever he is travelling.
Official sources said Singh decided not to celebrate this time after he came to know about the terror attacks.
Singh had arrived at Frankfurt last night from New Delhi and had telephoned German chancellor Angela Markel to congratulate her on her election victory.
Merkel emerged triumphant for a third term at the helm of Germany in Sunday's elections.
Singh's US visit is aimed at charting a course for “future cooperation” by expanding and deepening bilateral relations in a host of areas, including trade and investment, civil nuclear cooperation, defence and counter-terrorism.
Some agreements including in the field of defence are expected to be signed during his visit.
From Washington, Singh will move to New York to address the UN General Assembly.