blast before he could detonate his own explosive and a fourth was seen here taken away as security forces fire into the air to clear the crowd. this man said he was prying when the blast blew a door right over his head. the victims carried by bystanders over rubble from damaged buildings and rushed to nearby hospitals. >> a bomb, the twin suicide bombing went off. the area is mostly empty. it's been cordened off by the army, otherwise there is a lot of shattered glass on the street and blood and it's a scene of chaos and carnage. >> reporter: within hours, isis claimed responsibility. this neighborhood is a stronghold of hasballah fighting alongside bashar al-assad's. >> isil doesn't think of itself