A Pakistani national has been arrested and charged with a scheme to illegally export nuclear-related materials to his home country from the United States. The US Justice Department said yesterday that Nadeem Akhtar, 45, who lives in Silver Spring, Maryland, a Washington suburb, was indicted for conspiring with others to illegally export restricted goods and technology to a Pakistani nuclear power plant and a Pakistani research commission. Akhtar, who owns a company called Computer Communication USA, was specifically accused of illegally exporting radiation detection devices, resins for coolant water purification, calibration and switching equipment, and surface refinishing abrasives. Officials said with an unidentified co-defendant, the alleged scheme began late in 2005 and lasted until March of last year. They said. most of the illegal exports took place between 2005 and 2008. The indictment alleged that Akhtar worked on behalf of the co-defendant who had business relationships with Pakistan government entities and who obtained the items from the United States and other nations. The indictment also alleges that Akhtar and his co-defendant transferred funds from Pakistan and Dubai to bank accounts in the United States.