Austrian authorities said they arrested a second suspect in an attempted bombing of the U.S. Embassy in Vienna. Police said they took a man into custody in the town of Tulln, about 15 miles west of Vienna. Federal police said they were treating the suspect as a possible accomplice of a Bosnian who was arrested Monday after he tried to enter the embassy with a backpack containing explosives and nails. The Bosnian was arrested after his bag set off a metal detector and the man fled on foot. It was unclear how far he made it into the embassy. Public broadcaster ORF, citing unidentified officials, reported that a metal detector sounded an alarm as the man was passing through security checks and that he fled immediately. Guenther Ahmed Rusznak, a spokesman for Vienna’s Muslim community, issued a statement late Monday condemning the attempted bombing and rejecting radical Islam.