BEIRUT, May 23 (APP): Deadly Bombings by ISIS in Syria play havoc
More than 120 people were killed on Monday in two Syrian regime bastions in a spate of bombings claimed by the Islamic State militant group.
Observatory head Rami Abdel Rahman said they were "without a doubt the deadliest attacks" on the two cities since Syria's conflict erupted in March 2011.
Their populations are mostly Alawite.
IS is not known to have a presence in Syria's coastal provinces, where its militant rival and Al-Qaeda's local branch Al-Nusra Front is much more prominent.
But IS is notorious for using deadly sleeper cells to attack its enemies.
The attacks began at 9:00 am local time (0600 GMT) in Tartus , where steadfast regime ally Russia has long maintained a naval base.
State television broadcast footage of a bus station hit by one blast in Tartus , showing charred minibuses and others still ablaze.