PESHAWAR, Pakistan — A suicide bomber killed a senior provincial official and at least nine guests at the official’s home in northwestern Pakistan on Wednesday, in the most high-profile political assassination by the Islamist insurgency there this year.

The official, Israr Gandapur, the law minister in Khyber-Pakh-

tunkhwa Province, was exchanging greetings with neighbors to mark the Id al-Adha religious holiday at his village near Dera Ismail Khan, in the west of the province, when the bomber struck, provincial officials and the police said.

The attacker fatally shot a police guard outside the gate before rushing toward the room where the minister was receiving visitors. Mr. Gandapur, 38, and at least nine other people were killed in the blast, and at least 30 were wounded, the police said.

Witnesses described scenes of carnage as villagers dressed in new clothes for the holiday were either killed or badly wounded. “There were arms, legs and heads everywhere,” one witness, Haseeb Khan, told Reuters.