In US, an improvised explosive device caused blast at a suburban Minneapolis mosque when worshippers were gathering for morning prayers. According to authorities, no one was hurt in the explosion at the Dar Al-Farooq Islamic Center in Bloomington but it heavily damaged premises. <br/><br/>According to FBI, no one has been arrested yet and investigators are looking for suspects. Bloomington Police Chief Jeff Potts said, when police arrived, they found smoke and fire damage to the building.<br/><br/>