Developments in Iraq on Sunday:

_Shiite cleric Grand Ayatollah Ali al-Sistani in Najaf met with the top U.N. envoy in Iraq, Ashraf Qazi who said al-Sistani promised he did not intend to directly involve himself in the political process.

_Members of the Shiite-led United Iraqi Alliance named former nuclear scientist Hussain al-Shahristani as their candidate to be a deputy to the parliament speaker.

_Gunmen killed a local official from the Supreme Council of the Islamic Revolution in Iraq, or SCIRI, and two of his relatives.

_Militants from Abu Musab al-Zarqawi's terror network posted a video on the Internet purporting to show the execution of a man identifying himself as Col. Ryadh Gatie Olyway, who said he was a liaison officer with the U.S. forces. The authenticity of the video could not be verified.

_In Baghdad, bodyguards for Science and Technology Minister Rashad Mandan Omar opened fire on a crowd of protesters who had gathered to demand their full wages. Three guards were wounded.

_Insurgents attacked a police patrol with a roadside bomb in the southern oil city of Basra, injuring one civilian. They also damaged an oil pipeline in northern Iraq, halting exports to Turkey.

_The U.S. military said an unmanned aerial vehicle crashed near Balad, about 50 miles north of Baghdad. The cause was under investigation.

_ A roadside bomb also exploded 25 miles north of Baghdad near a U.S. supply convoy, while a car bomb blew up near U.S. soldiers in the northern city of Mosul, witnesses said. U.S. military officials had no information on the blasts.