"...
In a statement, Isis said the aim of
the attack was to kill Shia Muslims.
Local media identified the three
suicide bombers, saying two of them
were Palestinians and one Syrian.
Burj al-Barajneh is a heavily
populated, poor and crowded
neighbourhood that is often
associated with Hezbollah. It was not
possible to verify Isis's claim of
responsibility…."
http://www.jihadwatch.org/2015/11/islamic-state-claims-jihad-suicide-attacks-in-beirut-that-murdered-43