Britain, China, Pakistan, Canada, France, South Africa and Bangladesh were among the countries that condemned the terror attacks that killed 61 people and injured 188 in the Capital.
US secretary of state Condoleezza Rice said, These acts are made more heinous in that they deliberately targeted innocent civilians preparing for holiday celebrations. Fighting terror is our common struggle, and we stand with the people of India as they bring to justice those responsible for these cowardly acts.
UN secretary general Kofi Annan said he was appalled and shocked at the terrorist outrage on the eve of Diwali. The secretary general is appalled by, and condemns the series of, terrorist bombings which have resulted in many deaths in the Indian Capital, his office said in a statement.
British Prime Minister Tony Blair has sent a letter of condolence to Prime Minister Manmohan Singh while his foreign secretary Jack Straw said the blasts were yet another example of terrorists cynical and callous disregard for human life.
Chinese premier Wen Jiabao and foreign minister Li Zhaoxing sent separate letters of condolences to their Indian counterparts. In a letter to Dr Singh, French premier Dominique de Villepin, said, France condemns terrorism and terrorist acts with the greatest severity.
Pakistan termed the blasts as a criminal act of terrorism and hoped a thorough investigation will be carried out and the perpetrators brought to justice.