OSAKA -- Osaka Prefectural Police on Friday searched a key operational headquarters of West Japan Railway Co. (JR West) two days after a rescue worker was run down by a train while assisting a teenager.

Yoshio Nakazawa, 28, died from loss of blood shortly after he was hit by a JR West express train at about 7:45 p.m. Wednesday in Yodogawa Ward, Osaka. He and some colleagues were called in to help a 14-year-old boy who was injured while playing with friends on tracks of the JR Tokaido Line. Another rescue worker was seriously injured in the incident.

JR West admitted Thursday it did not tell the emergency personnel that train services had resumed on the tracks. JR West halted the train service after the boy was injured but started back up again 25 minutes later.