Arab League Secretary-General Nabil El-Arabi expressed concern over the "accelerated pace" of violence in Lebanon after two rockets struck a Hezbollah-controlled area of Beirut on Sunday morning.
"Violence in the Lebanese city of Tripoli and the criminal act in Beirut represent attempts to destabilise Lebanon's security situation, just like the heartbreaking, bloody situation in Syria," El-Arabi said in a Sunday statement.
The Arab League chief also condemned the involvement of Hezbollah in the ongoing Syria conflict, urging the leadership of the Lebanese-Shia resistance movement to revisit its position regarding the two-year-old conflict.
"The only way to ensure Lebanon's national security should be through national consensus between all political forces so as to avoid the dangerous regional implications of the war in Syria," El-Arabi declared.
On Sunday, two Grad rockets hit the southern suburbs of Beirut. One of them struck a car showroom where four people were wounded and vehicles damaged, a Lebanese security source told AFP.
It was the first time the Lebanese capital's southern suburbs have been targeted during the conflict in neighbouring Syria, where Hezbollah has thrown its military might behind the regime's fight against armed insurgents seeking to topple President Bashar Al-Assad.
The blasts came just hours after Hezbollah leader Hassan Nasrallah vowed "victory" in Syria.