As suspect in French train attack is interrogated, questions mount on Europe’s security

PARIS — French authorities on Sunday continued to interrogate a suspect whose attack on a high-speed train was foiled by vacationing American service members, amid mounting questions about security lapses on Europe’s vital rail system.

A Moroccan man identified by security officials as Ayoub El-Khazzani was being questioned Sunday by French counterterrorism investigators on the outskirts of Paris. He was tackled, disarmed and hogtied on the train by the Americans and a British man Friday evening after starting to shoot aboard the packed train, which was hurtling from Amsterdam to Paris.