A couple that once lived in Waltham was indicted today for allegedly doing business with a suspected Syrian bomb maker, federal prosecutors said.Anni Beurklian, 49, and Antoine Ajaka, 50, fled the United States in January as they were negotiating a plea deal for sending electronic components to a company that the U.S. suspects of making bombs used against US forces in Iraq and Afghanistan, prosecutors said.Amir Katranji 52, a Syrian resident who owns EKT, the Syrian company, was also indicted.