Lebanese caretaker Prime Minister Najib Mikati described the fighting in the Palestinian refugee camp of Ain al-Hilweh in southern Lebanon as a flagrant violation of his country's sovereignty, after he held telephone talks with both the Palestinian president and the head of the political bureau of the Islamic Resistance Movement (Hamas).

Mikati said in his remarks on Thursday that "it is neither acceptable nor permissible for Palestinian organizations to consider Lebanese land loose and resort to bloody fighting."

He added that the Lebanese security forces will play their required role to control security.

Earlier in the day, Ismail Haniyeh, head of Hamas' political bureau, expressed hope that Lebanon would do more to ensure that the truce in the Ain al-Hilweh camp was established.

According to a statement issued by the movement, Haniyeh reviewed with the Lebanese caretaker prime minister the situation in Ain al-Hilweh camp during a phone call, following the clashes that erupted in the camp last Saturday and are renewed intermittently.

Haniyeh said he hoped Lebanon would do more to stabilize Tuesday's ceasefire and restore the status quo ante.

Haniyeh stressed the need to respect the decisions taken by the Palestinian factions, especially the Joint Palestinian Action Committee.

The commission, which is working to calm the situation, announced on Tuesday the formation of a field committee to stabilize the ceasefire and withdraw all militants, and the assignment of an investigation committee to coordinate with the Lebanese authorities in the assassination of Abu Ashraf al-Armouchi and lift the lid on the perpetrators of the operation.

Palestinian President Mahmoud Abbas told Mikati earlier that he supported what the Lebanese government and army are doing to maintain law and order and a ceasefire in the Ain al-Hilweh camp.

Abbas added, during a call with Mikati, that the Palestinian presence in Lebanon is temporary until the implementation of international legitimacy resolutions.

Clashes in Ain al-Hilweh between armed factions and Fatah's National Security killed 12 people and wounded more than 60.

The camp has been calm since dawn on Thursday following renewed clashes last night with machine guns and rocket-propelled grenades.