The suspect in the Berlin lorry attack that killed 12 people and injured 48 others has denied any involvement, Germany’s interior minister said.
Berlin police chief Klaus Kandt later said he could not confirm the suspect in custody was the driver of the lorry.
The man being held is believed to have arrived in Germany from Pakistan at the end of last year.
He was captured in a park 2km away after reportedly fleeing the popular Christmas market in west Berlin.
Mrs Merkel has vowed to punish those responsible for the Berlin attack “as harshly as the law allows”.