A bomb killed 25 people in northwest Pakistan yesterday, while in the capital opposition politicians walked out of parliament, forcing the chamber to postpone a debate on weekend violence in Karachi.

No one claimed responsibility for the blast in the lobby of a hotel popular with Afghans in Peshawar, capital of North West Frontier Province (NWFP), where militants opposed to government support for the United States have launched attacks.

There was no indication the blast was linked to weekend violence between pro-government and opposition activists in the southern city of Karachi which killed nearly 40 people.