Masked gunmen shot dead a Hizbullah supporter and two other men, including a member of the security forces, in the northern city of Tripoli early Thursday, a security official said.

"Masked men on motorbikes shot dead Hussam al-Mouri, a security official and a third man who happened to be at the scene," the official said.

Caretaker Prime Minister Najib Miqati expressed relief on Sunday over the measures undertaken by the Lebanese army to control the situation in the northern city of Tripoli, stressing that all officials fully support the military in its actions.

Miqati called in a statement issued by his press office the army command to intensify the measures in the Tripoli to comfort the citizens in the northern city, which image was tarnished by the absurd battles.

An exchange of gunfire broke out on Friday between the rival Tripoli neighborhoods of Bab al-Tabbaneh and Jabal Mohsen.

“Machineguns are being used in the clashes along Syria Street,” the frontline between the two districts, state-run National News Agency said.

A 200 g hand grenade exploded in al-Mina roundabout in Tripoli on Thursday, but no casualties were reported, media reports said.

“At exactly 9:00 p.m., an explosion was heard in the el-Mina roundabout in Tripoli. An army patrol rushed to the area with a military expert who said that the bomb was handmade and weighs 200g,” the army command said in a statement on Friday reporting no injuries.

Armed men fatally wounded one person and left several others injured at a Tripoli fairground on Friday night, security officials and police said.

"A group of criminals savagely opened fire at a fairground at Omar Mokhtar Street in Tripoli wounding three people but a seriously hurt woman died from her wounds when she arrived at the hospital," said Tripoli security headquarters on Facebook.

Tripoli police chief Brig. Gen. Bassam al-Ayyoubi on Thursday announced the launching of a crackdown on gunmen “who open fire in the air or attack citizens and their properties” in the restive northern city.

According to the National News Agency, Ayyoubi stressed that the Internal Security Forces, in cooperation with the army, will “strike with an iron fist.”

Caretaker Interior Minister Marwan Charbel said Wednesday security forces should strike gunmen with an “iron fist” in the northern city of Tripoli, which he described as having an “uncomfortable” security situation and “bad” economic conditions.

“Tripoli residents are fearing an upcoming turmoil … but the army and security forces are coordinating to prevent security incidents,” Charbel said ahead of a meeting of the Central Security Council aimed at implementing a strategy to impose order in the city.

Caretaker Prime Minister Najib Miqati considered on Wednesday that the disputes in the northern city of Tripoli between the rival neighborhoods of Bab al-Tabbaneh and Jabal Mohsen no longer exist.

“We are witnessing attempts by some mobs to control the city,” Miqati said in comments published in An Nahar newspaper.

Protests broke out in the northern city of Tripoli on Tuesday over a ruling against the imam of the Amira Mosque over his links to the 2008 bombing in the city's Tall area.

Scuffles erupted between the angry protesters and the army at the city's Abdul Hamid Karami square.

Caretaker Interior Minister Marwan Charbel denied on Tuesday that the northern city of Tripoli will witness renewed security incidents after the Eid al-Fitr holiday.

“These are just baseless rumors,” said Charbel after attending a security meeting headed by caretaker Prime Minister Najib Miqati at the Grand Serail.