Egypt gave heroes' funerals Saturday to the parliament speaker and four security guards killed a day earlier in an ambush, and suspicion for the killings centered on Iraq.

Egypt has led Arab opposition to Iraq's Aug. 2 invasion of Kuwait.Rifaat el-Mahgoub was the first Egyptian politician to be assassinated since Moslem extremists killed President Anwar Sadat at a military parade on Oct. 6, 1980.

A sixth person shot in the attack, el-Mahgoub's driver, died Saturday after being wounded in the stomach, back and arms, doctors said.

President Hosni Mubarak led a procession of about 1,000 mourners at Saturday's state funeral in Cairo's Nasr City district, where Sadat's procession also took place.

Security was tight. Hundreds of military police in red berets, white-uniformed security police and plainclothesmen were on hand.

Under the constitution, the 64-year-old speaker was second in rank to Mubarak, who has not named a vice president.

Although there was still no claim of responsibility for the attack, government and outside experts said they suspected either terrorists sent by Iraq or Egyptian Moslem extremists.

Egyptian security forces continued their dragnet for the assassins Saturday. Policemen stopped motorcyclists on Cairo's streets looking for the killers, who escaped on two Suzuki motorbikes.

At the funeral, security forces sealed off all streets leading to the mosque where the service was held and lined the 500-yard procession route.

Mubarak, flanked by the speaker's son and the father of one of the bodyguards, led the procession. Among the mourners was Foreign Secretary Douglas Hurd of Britain, in Cairo on a two-day official visit.

Ceremonial units from Egypt's uniformed services spearheaded the funeral procession, followed by a military band and two dozen wreath-bearers.