A U.S. Army officer arrested in the United Kingdom on suspicion of spying for Russia is expected to be charged in Britain in the coming days, a U.S. official said. The officer is thought to face British charges on Sunday or Monday before prosecutors pursue a case under the U.S. military justice system, the official said. The official added that no information was handed over to Moscow. British police arrested the officer on Tuesday at a NATO base near Gloucester, at Imjin Barracks. Police said the allegation involves assisting a foreign intelligence service and obtaining or disclosing protected information. Investigators said the arrest was not linked to other counterterrorism investigations. The Metropolitan Police said its counterterror unit worked with the FBI and the U.S. military. The Kremlin denied any connection to the case. The latest status is that the officer is arrested and expected to be charged in Britain imminently, with next steps planned under U.S. military justice.