Japanese police detained a 20-year-old junior airman from Naval Air Facility Atsugi early Friday after he allegedly pushed an emergency-stop button on a train platform, then boarded a train and passed out, according to local police and base officials.

He was found three hours later at the same station but heading in the opposite direction, police said.

An Ebina police official said a railway official at Kashiwadai Station, on the Sagami Railway Sotetsu Hon-sen (line) near Atsugi, called police after finding the individual on an out-of-service train headed to its depot around 1:22 a.m.

The person was carrying a military ID and a uniform in a bag, officials said. When he couldn’t be roused, station officials called police, who contacted base security, the police official said.

Thursday evening at the same station, someone pushed the emergency-stop button on the platform, delaying an outbound train for four minutes, a station official said. An attendant found the sailor on the platform alone, lectured him and put him on an outbound train toward Ebina, the station official said.

Three hours later, the same sailor was discovered sleeping while traveling in the opposite direction on the out-of-service train. Officials believe he had traveled back and forth. When police arrived, someone recognized him as the person who pushed the emergency button, the station official said. He was turned over to base security.

Japanese police have not pressed charges, according to the police spokesman. The sailor, whom Japanese and Navy officials would not name, belongs to a tenant command at the base and is under base supervision until his case is closed, said base spokesman Brian Naranjo.