A suicide bomber attacked a lawmaker's house in eastern Pakistan on Monday, killing at least 15 people and wounding more than 50, officials and a witness said.
The blast was the latest in a string of bombings against government, military and Western targets in Pakistan, an important ally in the U.S. war against terrorism.
The bomber barged into the home of legislator Rasheed Akbar Niwani, who belongs to the main opposition party in the federal government.
Police officer Khan Baig said at least 15 people were killed and more than 50 others injured. It was not immediately clear whether Niwani was among them or why he was targeted.
'Body parts lying everywhere'
A witness described the scene seconds after the blast.
"Everything has turned black here," Mohammad Ashraf told The Associated Press by phone. "I am seeing body parts lying everywhere. There are many heads lying here. It is blood everywhere."
Punjab, Pakistan's most populous and prosperous province, has largely been spared the militant-led violence that has gripped the nation's northwest, where Taliban and al-Qaida militants have bases.
On Sunday, suspected militants fired rockets near the home of the top provincial official in northwestern Pakistan. No one was injured in the strikes in Mardan that apparently targeted North West Frontier Province's chief minister, Amir Haider Khan Hoti.
Last week, a suicide bomber blew himself up outside the house of a leading pro-government politician, killing four people.