CAIRO - A delegation of some 50 Arab League (AL) observers will head to Syria on Monday, after the advance team arrived in the violence-torn country on Thursday, a senior AL official said Friday.

The delegation will be headed by Sudanese general Mohammed Ahmed Mostafa al-Dabi, head of the observer mission, official MENA news agency reported, quoting AL Deputy Secretary General Ahmed ben Helli.

AL Secretary General Nabil al-Arabi met with Dabi to discuss the work of the mission on Friday.

Syria signed the AL observer protocol on Monday in the Egyptian capital of Cairo after the AL threatened to submit the issue to the United Nations Security Council. On Thursday, the advance team, headed by Samir Saif al-Yazal, assistant to Arabi, arrived in Syria.

The Syrian government said Thursday a total of 2,000 army and security personnel were killed during the nine-month-old unrest. However, the United Nations said more than 5,000 Syrians have been killed in Syria.

On Friday, two suicide bombs rocked two security centers in central Syrian capital of Damascus, killing 44 and wounding 166 others. Syria authorities have blamed the twin bombs on al-Qaida.