The activist Islamic State has asserted duty regarding the assault.
"The denounced, kept over the assault on the Berlin Christmas showcase on December 19, 2016, was given up on tonight on the requests of the government prosecutor," his office said in an announcement.
Powers recognized the man before as a Pakistani shelter seeker.
"The criminological tests completed so far did not give proof of the denounced's nearness amid the violations in the taxicab of the lorry."
German powers had before said that the Pakistani refuge seeker may not be the correct man, starting apprehensions the genuine executioner could be on the run.
As the shellshocked German capital reeled from the nation's deadliest assault of late years, questions rose about whether the man confined overnight really dedicated the barbarity.
Berlin's police boss, Klaus Kandt, said "we may have a risky criminal in the range", and declared that security would be helped while asking "uplifted watchfulness".
Twelve individuals were killed and right around 50 injured when the truck tore through the group Monday, crushing wooden slows down and pounding casualties, in scenes reminiscent of July's lethal assault in the French Riviera city of Nice.
The damaged truck stopped with its windscreen crushed, a trail of devastation and shouting casualties afterward, with Christmas trees toppled on their side, days before the nation's most vital celebration.
Ladies grieve at the scene where a truck furrowed into a swarmed Christmas showcase. - Reuters
Chancellor Angela Merkel - who went by the scene of the slaughter for a moment's hush and afterward joined a commemoration benefit in the nearby Kaiser Wilhelm Memorial Church - named the lethal frenzy a reasonable "fear monger" assault.
Merkel said that, on the off chance that it was affirmed that the executioner had been a piece of the nation's late immense evacuee deluge, this would be "especially sickening in connection to the numerous, numerous Germans who are included each day in helping displaced people".
Inside Minister Thomas de Maiziere had before said the top suspect was a Pakistani man who had arrived through the supposed Balkan course last New Year's Eve and was remaining at a Berlin evacuee shield.
De Maiziere included however that the suspect had demanded he was blameless and had not surfaced on any dread watch records.
'Bodies all around'
Neither the activist Islamic State (IS) gathering nor different fanatics promptly guaranteed the assault, said de Maiziere, who promised those dependable would be chased down.
The Polish-enrolled vehicle, which was stacked with steel bars, had cut a ridiculous swathe of 60-80 meters (yards) into the market in the once-isolated city's inward west.
No less than six of those executed were German natives, powers said, while nations from Israel to Spain said their nationals were among those harmed in the bustling traveler spot.
A Polish man, slaughtered with a shot, was found on the truck's traveler situate, said de Maiziere. He was accepted to be the vehicle's enlisted driver.
The Polish proprietor of the lorry, Ariel Zurawski, affirmed Monday that the driver - his 37-year-old cousin - was missing, telling AFP: "We don't realize what transpired ... I've known him since I was a child. I can vouch for him."
Survivors related nerve racking stories of close misses and bloodletting as bubbly celebrating swung to death and annihilation in seconds.
The lodge of a truck is pulled off the Christmas advertise past the Zoopalast silver screen. - AFP
Briton Emma Rushton was getting a charge out of a glass of reflected on wine when the Christmas scene was broken by a noisy crash and shouts.
"We heard a truly noisy blast and saw a portion of the Christmas lights to one side beginning to be pulled down," she told Sky news.
"At that point we saw the explained vehicle experiencing individuals and through the slows down and simply pulling everything down, and after that everything went dull."
German banners flew at half-pole Tuesday and grievers set blooms and candles at the site. Berlin's historic point Brandenburg Gate was to be lit in the German hues dark, red and gold out of appreciation for the casualties at nightfall on Tuesday.
The legislature pronounced that the city's 60-odd Christmas markets - following a one-day willful stoppage keeping in mind the casualties - ought to proceed in light of the fact that "we should not give our free lifestyle a chance to be taken from us".
Europe has been on high alarm for the vast majority of 2016, with ridiculous jihadist assaults striking Paris and Brussels. Germany likewise endured two assaults in July in the southern condition of Bavaria submitted by refuge seekers and guaranteed by the IS gathering.
A hatchet frenzy by an Afghan or Pakistani man on a prepare injured five individuals, and a suicide shelling by Syrian refuge seeker left 15 individuals harmed six days after the fact.
The landing of 890,000 exiles a year ago has energized Germany, with faultfinders calling the flood a genuine security danger.
Marcus Pretzell of the counter movement Alternative for Germany party named the Christmas showcase casualties "Merkel's dead".
The assault in Berlin comes five months after Tunisian Islamist radical Mohamed Lahouaiej Bouhlel furrowed a truck into a group on the Nice seafront, killing 86 individuals.
President Francois Hollande said France was confronting an "abnormal state of risk" taking after the Berlin gore.
The United States additionally censured an obvious "fear based oppressor assault".