WASHINGTON (AFP) - US justice officials said Tuesday they have indicted four Singaporeans and an Iranian for exporting radio equipment to Iran, for roadside bombs in Iraq. At least 16 radio antennas were found in unexploded improvised explosive devices (IEDs) in Iraq, the US Justice Department said in a statement, noting that the Iranian suspect in the case is still at large. The US military has repeatedly accused Shiite militias in Iran of conducting bomb attacks in neighbouring Iraq in an attempt to foment sectarian hatred. The indictment said thousands of antennas were meant to be exported from the US to Iran.