The Tunisian man who plowed a truck into a Berlin Christmas market had lived under 14 aliases and was so well known to German officials that a key counterterrorism committee had discussed his case seven times.
Investigators on Saturday worked to determine if the Berlin Christmas market attacker got any logistical support to cross at least two European borders and evade capture for days before being killed in a police shootout in a Milan suburb.
The Tunisian man suspected of driving a truck into a crowded Christmas market in Berlin was killed early Friday in a shootout with police in Milan, ending a Europe-wide manhunt, Italy's interior minister said.
ISIS has encouraged "lone-wolf attackers" to use weapons that are easier to obtain — vehicles, knives and even rocks. Every city is vulnerable to trucks.
The German capital was on high alert Tuesday with one or more suspects still at large in a deadly truck assault on a Christmas market.
Officials: The suspect in the truck attack that killed 12 people at a busy Berlin Christmas market came from Pakistan and had applied for asylum in Germany.
A teenager who attacked passengers with an ax on a German commuter train seems to have acted alone and had no direct connections to the Islamic State, Germany's top law enforcement official said Wednesday.