beirut three men blow near police headquarter central damascus wednesday kill two people injure six others state media say cite interior ministry islamic state claim responsibility attack second month two suicide bombers try storm police center clash guard detonate explosive devices outside khalid bin al-walid street damascus police chief say police force chase third attacker blow nearby entrance clothe market investigations ongoing find come police chief mohammad kheir ismail tell state tv outside headquarter issue control islamic state statement say three suicide bombers attack police center machine gun explosive belt islamic state also claim responsibility early month similar suicide bomb attack police station another part damascus 17 people report dead damascus enjoy relative security syria six-year civil war rag nearby across country several attack hit capital recent years include car bomb kill 20 people july islamic state tahrir al-sham lead militants formerly link al qaeda claim separate suicide blast kill score people damascus previously desperate suicide attempt come response victories syrian arab army interior ministry fully ready thwart terrorist act state television quote interior minister mohammad al-shaar say help russian jet iran-backed militias damascus government push back rebel western syria shore rule main urban center recent months also march eastwards islamic state syrian troop ally force recapture several suburbs damascus rebel factions past year army ally fight insurgents jobar tarma district capital eastern outskirts suicide bombers attack damascus police center syrian state media