World leaders are condemning Thursday's deadly bomb attacks targeting the motorcade of former Pakistani Prime Minister Benazir Bhutto in Karachi.
The White House called the suicide attack a horrific tragedy and offered assistance to Pakistan. It also said Islamic extremists are most likely responsible.
A State Department spokesman (Tom Casey) said the United States stands with Pakistan in its fight to eliminate the threat of terrorism and to build an open, democratic, and peaceful society.
Britain's Prime Minister Gordon Brown also pledged his country's support, saying London will always encourage attempts by Pakistan's people to re-establish a democracy in their country.
Afghan President Hamid Karzai condemned what he called a brutal and cowardly attack.
India called the developments reprehensible, adding that governments in the region must work together to counter terrorism.
Neighboring Bangladesh released a statement of support for Pakistan, while Russian President Vladimir Putin offered condolences to the Pakistani government and called for a global response to terrorism.
United Nations Secretary-General Ban Ki-moon expressed shock and extended condolences to the families of the victims.
NATO Secretary General Jaap de Hoop Scheffer condemned the attacks, saying Pakistan's democratic aspirations should not be denied by terrorists.
China and the European Union also denounced the deadly blasts.