Dozens held a vigil in Cairo's Shobra district on Thursday to commemorate the third anniversary of the Maspero clashes that left 27 Copts killed.

Egypt's Maspero Youth Union, Egypt's Copts Coalition and several revolutionary groups held the vigil in Shobra, a neighbourhood home to a large Coptic community, commemorating and demanding justice for the victims.

Participants held candles and sang hymns amid a heavy security presence in the area.

However, the vigil was ended upon police request after limited scuffles broke out between the participants and a small protest chanting against the army, reported Ahram Arabic news website.

Another brief vigil of tens of activists was held on the steps of the Journalists' Syndicate in downtown Cairo. Some held up photos of victims and army generals they deem responsible for the deadly incident.

Meanwhile, families of Maspero Martyrs Union announced that a memorial mass will be held on Friday in the Archangel Michael Church in Sixth of October on the outskirts of Giza where the victims are collectively buried.

In the early evening hours of 9 October 2011, twenty-seven unarmed Christians were killed and more than 300 hundred injured in violent clashes with the army.

Hundreds of peaceful Coptic protesters and allies had marched on the Maspero's state television building in downtown Cairo to denounce discrimination against Copts and a spate of church burnings.

Shortly after reaching their final destination, all hell broke loose.

Later, video footage showed frenzied armoured personnel carriers running over protesters.

The army maintained that unknown assailants opened fire on the soldiers guarding the TV building triggering a state of panic among the troops.

In September 2012, three soldiers were charged with "involuntary manslaughter" and sentenced to two and three years in jail. The verdict was criticised by some rights activists as all investigations were led by the military itself.

Over the past two years several Coptic rights and political groups have called for re-conducting investigations into the incident.

These calls were reiterated again on the third anniversary of the incident by pro-Coptic rights political groups such as the left-of-centre Dostour Party. In a statement the party issued on Thursday, the party called for "holding those responsible for it accountable," saying no action "was taken toward media outlets... that played an inciting role and manipulated the facts" during their coverage.

Some presenters of Egypt's state television, located in Maspero, were accused by many of incitement against the protestors as they charged Copts "were attacking the army" and called on "honourable citizens" to "protect the armed forces."

Throughout the night of 9 December, armed vigilantes attacked Christians in the vicinity of the TV building.

Courts looking into the Maspero clahses questioned Rasha Magdy, state television presenter who anchored the coverage of the clashes live from the studio that night, however, she was not convicted of any wrongdoing.

Three fact-finding committees had been formed to look into roots of the Maspero clashes: the first in 2011 under former Prime Minister Essam Sharaf, the second in 2012 under former President Mohamed Morsi and the third was from the National Council for Human Rights. However, their reports were not made public.

We demand a neutral investigation into Maspero, George Ishaq, a member of the semi-governmental National Council for Human rights, told Ahram Arabic news website.

Coptic Christians comprise about 15 percent of Egypt's 90 million population and have been subject to discrimination over the decades.