Egyptians participate in a rally marking the first anniversary of the "January 25th Revolution" on the Tahrir Square in Cairo, capital of Egypt, Jan. 25, 2012. (Xinhua/Qin Haishi)

Tens of thousands of Egyptians flocked on Wednesday to Tahrir Square in their capital Cairo to mark the first anniversary of the unrest that toppled former President Hosni Mubarak.

The protestors, from different political groups and places of the country, called for achieving social justice, fighting corruption and holding fast trials of former regime figures.

Other major cities such as Alexandria saw protests on Wednesday, a national holiday to mark the occasion. The protests were peaceful as of Wednesday evening. Some protestors shouted slogans against military rulers while others supported the army.

The April 6 movement intended to continue the sit-in until their demands were met, while other political powers decided to end the demonstration.

In a speech on Wednesday, Prime Minister Kamal el-Ganzouri praised those who have sacrificed their souls for the sake of the nation and for freedom, democracy and social justice. The protests from Jan. 25 to Feb. 11 last year left about 800 people dead and more than 6,000 injured. Protests are common after the fall of Mubarak, which disturb economic recovery and deal a heavy blow to the tourism sector.

Egypt needs its citizens to work productively in different economic, service and social sectors so that they can harvest the fruits of fair distribution of national income, official MENA news agency quoted el-Ganzouri as saying.

"Fair punishment is what we all work on to give the rights of those heroes sacrificing their souls," Ganzouri said, urging the Egyptians to work in one line to implement their goals.

The trial of Mubarak over charges of ordering to kill protestors and corruption began on Aug. 3 last year and continues. If convicted, he will face death penalty, state media reported.

In a statement posted on its official Facebook page on Wednesday, the Supreme Council of the Armed Forces (SCAF) said "a year has passed and there are many facts that will be disclosed when we return to our barracks ... When the secrets and facts are revealed, the Egyptians will be proud of their army."

The SCAF promised to "go back to the army units on June 30, when Egypt is wearing the clothes of freedom and democracy."

Muslim Brotherhood (MB) members and Salafists joined Wednesday' s protests. There were divisions among the participants, with some wanting a celebration of the unrest, while others seeing no achievements and vowing to continue to fight.

"We ask for fair retaliation and fast trials to make the people satisfied," Mohammad Fadl, a MB member, told Xinhua.

Due to the absence of policemen in the iconic Tahrir square, " popular committees" were formed at the entrances and the exits of the square to protect demonstrators and not allow thugs or criminals to fuel clashes among protestors.

The Health ministry said at least 122 people were injured due to stampedes in Tahrir Square.

The newly-elected People's Assembly (lower house of parliament) held its first session on Monday. Islamist parties won more than 70 percent of its seats. The Freedom and Justice Party, the political arm of the MB, accounts for 47 percent while the Salafist Nour Party 24 percent. Mohamed Saad Katatni, secretary general of the FJP, was elected its speaker. His two deputies were Abdel Alim Dawoud from Al-Wafd party and Ashraf Thabit from the Nour Party.

Hussein Tantawi, chairman of the ruling SCAF, announced on Tuesday the end of the state of emergency beginning from Wednesday except in thuggery cases. The emergency law has been in effective since 1981. To end the law was one of the basic demands of protestors.

Presidential elections will be held in mid-June. Tantawi promised to hand over power by the end of June, but some protestors insisted on an immediate power transfer.