British counter-terrorism police have arrested a 41-year-old U.S. soldier near Gloucester, England, as part of an investigation involving alleged links to Russia, The Guardian reported Tuesday.

The investigation involves “allegations of espionage,” according to the FBI director, as cited in the newspaper’s report.

British counter-terrorism investigators are working closely with U.S. authorities, the U.S. military and the FBI. The Guardian described the arrested man as a senior soldier. The alleged Russian links have not been established as fact.

Sources