Berlin attack suspect Anis Amri 'used 14 different identities'
German authorities knew of 14 different identities used by suspected Berlin Christmas market attacker Anis Amri, a police official has said.
Investigators say the 24-year-old Tunisian drove a truck into the market on December 19, killing 12 people.
He was killed on December 23 in a shootout with Italian police in a Milan suburb.
Amri came to Germany in mid-2015 and authorities later put him on a list of potentially violent Islamic extremists.
Separately, he was investigated for receiving benefits simultaneously under two different identities.
Dieter Schuermann, the head of North Rhine-Westphalia state's criminal police, told regional politicians that authorities could not find evidence of possible attack plans that would stand up in court, news agency dpa reported.
He said they "exhausted all legal powers to the limit to ward off potential dangers".