A suicide bomber believed to be from the Daesh militant group killed three people and injured at least 20 others in an attack on Sunday on an outpost manned by a Syrian rebel group at a refugee camp on the border between Syria and Jordan, a rebel official said.

The attack targeted the Jaish al-Ashair rebel group at the Rakban camp, said Said Saif, spokesman for the Forces of Martyrs Ahmed al-Abdo Brigades, a Free Syrian Army rebel group fighting against the Daesh terrorists.