<span style="color: #222222;">A suicide attack in south-eastern Iran has killed at least 27 members of the Revolutionary Guards. 13 others were also wounded in the attack. <br />''<br />''The bomber targeted a bus transporting personnel in Sistan-Baluchistan province near the border with Pakistan. <br />''<br />''The Guards, in a statement, said the assault came as the troops were returning from a border patrol mission. <br />''<br />''Sunni Muslim militant group 'Jaish al-Adl' has claimed the responsibility for the bombing. </span><br />