An explosion killed one person and injured three others on Sunday in a southeastern Iranian town that was the center of bloody unrest last month, Iran's state news agency IRNA reported.
A Revolutionary Guards statement quoted by the agency blamed what it called terrorist groups for the blast in a square in Saravan, near the border with Pakistan.
Earlier this month a UN human rights spokesman said at least a dozen people and possibly up to 23 had been killed in Saravan and other parts of Sistan-Baluchestan province where Revolutionary Guards and security forces used lethal force against fuel couriers from ethnic minorities, and protesters.