Bhutto killed by suicide bomber
Pakistan has been plunged into turmoil after former prime minister Benazir Bhutto was assassinated.
Britain joined international condemnation of the murder, which looks certain to cause the postponement of elections next month, something many hoped would pave the way for a return to full democracy.
Ms Bhutto was shot moments after leaving a rally of her opposition Pakistan People's Party in the city of Rawalpindi. The gunman then blew himself up.
There were immediate chaotic scenes outside the hospital where she died but calls for restraint from across the world.
Although the attack bore the hallmarks of Islamic extremists, the assassination sparked fury against the regime of President Pervez Musharraf.
Her party described Ms Bhutto as a "martyr". Her long-term political rival, former prime minister Nawaz Sharif, described her as a "sister" and pledged to "take the revenge on the rulers".
In Britain, Foreign Secretary David Miliband spoke of deep shock and paid tribute to a leader he said "knew the risks" of her return from exile.
"My thoughts and sincere condolences go to Ms Bhutto's family at this terrible time, as well as to the families of all those who lost their lives in this senseless attack," Mr Miliband said.
"Benazir Bhutto showed in her words and actions a deep commitment to her country. She knew the risks of her return to campaign but was convinced that her country needed her. This is a time for restraint but also unity.
"All those committed to a stable future for Pakistan will condemn without qualification all violence perpetrated against innocent people. In targeting Benazir Bhutto extremist groups have in their sights all those committed to democratic processes in Pakistan. They cannot and must not succeed."