Libya’s Government of National Accord (GNA) announced on Monday that it will boycott this weekend’s Arab economic summit scheduled for Beirut after Amal movement supporters attacked its national flag. "We have been forced to boycott this summit and refuse to participate in its work" because Lebanon was unable to guarantee "the appropriate climate" for it, the foreign ministry said in a statement. The GNA said the Lebanese government had failed to prevent the attack on Libyas flag. On Sunday, Amal supporters removed Libyan flags placed along Beirut’s seaside avenue, as part of Arab League preparations to welcome countries attending the summit. The supporters replaced those flags with their movement’s green flag. The movement objects that Lebanon builds ties with Libya due to the 1978 disappearance of the movement’s founder, Imam Musa Sadr, and two of his companions during an official visit to the country. The summit will go ahead despite an internal dispute caused by parliament Speaker Nabih Berri, who heads Amal, after he expressed his objection to inviting Libya after earlier calling to postpone the event over Syria’s absence. In Cairo, Arab League chief Ahmed Abul Gheit voiced "deep concern" over the burning of the Libyan flag in Beirut. He called on Lebanon to "ensure full respect for the delegations of member states from the Arab League who must participate in the summit meetings".