Cairo: The uneasy calm in Egypt was shattered on Saturday after a protester was killed in renewed clashes when pro-democracy demonstrators prevented the new Prime Minister from entering his office, mounting a significant challenge to the country's military rulers.

The fresh clashes came as thousands of Egyptians continues to flood into the Tahrir Square after rejecting the military's appointment of Kamal al-Ganzouri as the new Prime Minister and asking Generals to cede power to a civilian set up forthwith.

The protests have gained strength with new signs of unity among street protesters and the political elite and the demonstrators marched to the cabinet headquarters to block its entry to al-Ganzouri, 78, who has earlier served as premier in Hosni Mubarak's regime.

After two days of an uneasy truce following the Supreme Council of the Armed Forces' (SCAF) apology for civilian deaths, another protester was killed during a clash between
demonstrators and police outside the cabinet headquarters.

Two others were injured in the violence after police used tear gas to disperse the activists who tried to march to the Parliament. The appointment of al-Ganzouri was not welcomed by many people in Egypt.

Al-Ganzouri said he had unprecedented authority and was to start negotiations for the new cabinet after the elections which are expected to start next Monday.

Thousands remained camped at the Tahrir Square overnight in response to a call, following a week of deadly clashes in which nearly 40 people were killed in the country.

The young man killed on Saturday was identified as Ahmed Sayyed Sayyed, 21. He was carried to hospital suffering from pelvis bone fractures after being hit by a car, said Director of al-Munira Hospital Mohammed Shawky.

The Interior Ministry, however, denied reports that security forces had attempted to end a sit-in at the cabinet headquarters by force resulting in the death.

In a statement, the Ministry said, the clashes and the death of the protester were the result of confusion after some security vehicles, carrying personnel, were stopped by the protesters from heading towards the Interior Ministry.

Despite attempts to talk the situation out, some of the protesters started hurling Molotov cocktails and stones at the vehicles and forces alike, leading to confusion, it said.

One of the vehicles in the melee ran over a person while moving back, the statement said, while regretting the death.

Al Ganzouri has replaced Essam Sharaf, who resigned this week after nearly nine months in office amid mounting pressure from protesters who are seeking a quicker transition.

A lot of the people's angst is directed against the continued control of Field Marshal Hussein Tantawi, the chief of SCAF, who was Mubarak's Defence Minister for two decades.

The protesters on Friday got an unexpected boost after the grand imam of Al-Azhar mosque, Sunni Islam's highest authority backed them in their quest for democracy.

UN Secretary General Ban-Ki-moon too deplored the loss of lives in Egypt as thousands continued their protests against what they perceive as military's intentions to retain power
for a longer period.

The military earlier this week apologised for civilian deaths but said parliamentary elections will be held on schedule despite the unrest in Cairo and several other cities. The SCAF has announced the elections would now be held over two days and not one as decided earlier.

Meanwhile, in an unusual move, the head of Egypt club of Judges, Ahmed al-Zind, held a press conference to press for judicial supervision of the parliamentary elections, the first since Mubarak was ousted in February.

He insisted that absence of judiciary supervision of elections will render the election unconstitutional.

Al-Zind announced that each judge supervising the elections was insured by one million pounds in case of death and 750,000 pounds in case of injury.

Though Al-Zind did not elaborate on the reasons of the press conference, but it is being speculated that judges could have refused to supervise elections on security concerns.

After the clashes this morning, a cautious calm prevailed in the area surrounding the cabinet headquarters premises in downtown Cairo.

The protesters started deploying teams at the roads leading to the cabinet to monitor the actions of the security forces.

Meanwhile, Prime Minister al-Ganzouri started consultations over the line-up of the national salvation government he has been entrusted to form.

Al-Ganzouri started his contacts and held consultations with the National Council of Planning in Nasr City. He also held a meeting with seven young people from Tahrir Square to know their views on the government.

Al-Ganzouri's appointment has not been welcomed by many in Egypt. Professor Gaber Gad Nassar at Cairo University, acknowledged al-Ganzouri's reputation and integrity but believed he does not have the ability to bring stability in the given situation, a sentiment shared by many.

"The names al-Ganzouri will select for ministers are all above 60. I call on Ganzouri to respect his history and refuse this post," he said.