REUTERS/Joshua Roberts/File PhotoWASHINGTON, April 13 (Reuters) - The FBI on Thursday arrested an employee of the U.S. Air Force National Guard over the leaks online of classified U.S. documents that embarrassed Washington with allies around the world. U.S. Attorney General Merrick Garland said the FBI arrested the man, Jack Teixeira, "in connection with an investigation into alleged unauthorized removal, retention, and transmission of classified national defense information." The FBI said its agents had made an arrest and were conducting "authorized law enforcement activity at a residence in North Dighton, Massachusetts." The leaks were a "deliberate, criminal act," the Pentagon said. President Joe Biden earlier on Thursday said investigators were closing in on the source of the online leaks in what is believed to be the most serious security breach in years.

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