Protesters attacked offices of Libya's Muslim Brotherhood on Saturday as demonstrations sparked by a wave of assassinations in the eastern city of Benghazi turned violent, an Agence France Presse correspondent said.

Youths stormed and ransacked the building housing the Brotherhood, after hundreds took to the streets overnight to denounce the assassination of Abdessalem al-Mesmari, an anti-Islamist lawyer who campaigned for a civil state.

A rocket struck an apartment block in the center of the Libyan capital on Tuesday in an attack that caused no casualties, an Agence France Presse correspondent reported.

The building is located in a residential area of Tripoli between the Corinthia hotel and a tower that houses the British, Canadian and Maltese embassies, as well as foreign companies.

A man who hails from the northern city of Tripoli has been killed while fighting alongside the armed Syrian opposition against forces loyal to the regime.

“Gunfire was heard in Tripoli during a prayer for the dead for Ahmed Zaki Mansour,” LBCI television reported, adding that "Moamen Kahil, a minor, was wounded in the back by a stray bullet" from the shooting.

Hundreds of men and women supporting Salafist cleric Sheikh Ahmed al-Asir marched from Bilal Bin Rabah Mosque after Friday prayers, heading to al-Karameh roundabout in the southern city of Sidon.

The protestors assaulted TV crews in Abra, smashing the windows of their cars and breaking their cameras during the march.

The Army Command announced on Tuesday that the man arrested for appearing in a video alongside former singer Fadel Shaker had confessed to smuggling weapons into Lebanon.

It said in a statement that Ghali Haddara confessed to smuggling arms and ammunition into the so-called security zone in Abra in the southern city of Sidon.

The Ulemas of the northern city of Tripoli on Tuesday accused the Lebanese army of collaborating with Hizbullah to target members of the Sunni community and said the judiciary was receiving orders from Iran.

“The military is collaborating with Hizbullah to fight Sunnis,” Sheikh Salem al-Rafehi said following a meeting that the Ulemas held hours after Tripoli witnessed tension that left one person dead.

There was cautious calm in the northern city of Tripoli on Tuesday after a tense night that left an elderly dead and around five others injured, the state-run National News Agency reported.

Salim Amin al-Ashqar, 75, died after inhaling smoke from shops that were burned by armed men to protest the arrest of a suspect who had appeared alongside singer-turned Salafist Fadel Shaker in a video circulated in the wake of the gunbattles in the southern city of Sidon, NNA said.

The March 14 General Secretariat will hold its weekly meetings in different areas across Lebanon with the aim of decreasing the sectarian tension, al-Joumhouria newspaper reported on Tuesday.

According to the newspaper, the General Secretariat will kickstart this week meetings in the southern city of Sidon in solidarity with its residents.

Intermittent sniper fire left one person injured in the northern city of Tripoli on Sunday, the state-run National News Agency reported.

It said Mohammed Abdo Ibrahim, a resident of the neighborhood of Jabal Mohsen, was wounded in the leg when sniper fire between the area and al-Baqqar broke out.

Two people were killed on Saturday and six others were wounded in clashes in the northern city of Tripoli after clashes erupted between al-Baqqar neighborhood and Jabal Mohsen.

One person was killed by an explosive device he was handling, a security source told Agence France Presse.