Islamic State claims responsibility for suicide bombing at Shiite mosque in Islamabad

The Islamic State militant group has claimed responsibility for a suicide bombing at a Shiite mosque in Islamabad, Pakistan. The attack, which targeted an imambargah (a Shiite place of worship), resulted in multiple casualties. Pakistani authorities have reportedly arrested four facilitators and a suspected mastermind linked to the Daesh, another name for the Islamic State group, in connection with the attack. In response, the U.S. embassy in Pakistan has issued a security alert.