National Assembly legislator Sheik Dhari Ali al-Fayadh, his son, and two bodyguards were killed when a suicide car bomber rammed his vehicle into theirs as they traveled to parliament from their farm in Rashidiya, 20 miles northeast of Baghdad. Al-Fayadh, a Shiite in his late 80s, was the eldest member of the new parliament and had acted as temporary speaker. He belonged to the country's largest Shiite political party, the Supreme Council of the Islamic Revolution in Iraq, the senior partner in the governing coalition. It marked the second political assassination in a week, coming after the June 22 killing of a prominent Sunni Arab who had been a candidate to join a committee drafting Iraq's constitution. Al-Qaida in Iraq, which has declared war on Shiites, claimed responsibility for al-Fayadh's assassination on an Islamic Web site. The statement's authenticity could not be verified.