The first pictures of a Tunisian asylum seeker reported to be a suspect linked to the Berlin lorry attack have been released.

Prosecutors have not confirmed the identity of a suspect named by local media as Anis A, whose documents were reportedly found in the vehicle following the massacre.

Germany’s Bild newspaper published a photo of the suspect said to be taken from the papers, which give asylum seekers temporary leave to stay in the country while their claims are decided.

Islamic State claims responsibility for Berlin truck attack

The image appeared to match those on a Facebook profile of a Tunisian man called Anis Amri.

Der Spiegel reported that the suspect was born in 1992 in the city of Tataouine, although he was also believed to go under at least two other aliases and gave authorities differing dates of birth.

In the district of Kleve, in North Rhine-Westphalia, he went under the name Ahmed A, 21, the Allgemeine Zeitung reported.

It was unclear when the suspect arrived in Germany but a confidential security database entry from February reportedly showed authorities believed he had links to Isis, which was reported to be using his hometown as a transit base for fighters last year.

Anis Amri, latest suspect in Berlin truck attack (Facebook)

Anis A, who posed as Egyptian and Lebanese under various fake names, was reportedly classified as a terror threat and put under increased surveillance before a court in Ravensburg issued an order for his deportation in July. It was unclear how he remained in Germany.

Authorities have not confirmed the identification of a main suspect but authorities in the state of North Rhein-Westphlia were due to hold a press conference outlining developments.

A Pakistani asylum seeker originally arrested on suspicion of being the attacker has been released after no evidence was found against him, leaving the attacker at large and possibly armed.

The gun used to kill the Polish lorry driver has not been found, prompting warnings that the extremist could pose a continued risk to Germany.

Berlin Christmas market lorry attack Show all 18 1 /18 Berlin Christmas market lorry attack Berlin Christmas market lorry attack Several people have been killed after a lorry drove into crowds at a Christmas market in Berlin REUTERS/Fabrizio Bensch Berlin Christmas market lorry attack 'At least nine' people have been killed and more than 50 injured. AP Berlin Christmas market lorry attack Emergency Services rush a Berlin market victim to an ambulance Associated Press Berlin Christmas market lorry attack Police cordoned off the square at Kaiser Wilhelm Memorial Church following the incident REUTERS Berlin Christmas market lorry attack Rescue workers inspect the lorry that crashed into a Christmas market close to the Kaiser Wilhelm memorial church in Berlin EPA Berlin Christmas market lorry attack Emergency crews inspect the lorry that ploughed into a Berlin Christmas market, killing at least nine people AFP Berlin Christmas market lorry attack Fire crews attend the scene of the attack AFP/Getty Berlin Christmas market lorry attack Armed police secure the site of a lorry attack at a Christmas market in Berlin REUTERS Berlin Christmas market lorry attack Crushed debris is visible beneath the wheels of the vehicle REUTERS Berlin Christmas market lorry attack An injured man is pushed to an ambulance REUTERS Berlin Christmas market lorry attack Medics attend an injured person after the lorry attack which killed at least nine and injured more than 50 people AFP/Getty Berlin Christmas market lorry attack Firefighters examine the lorry which was rammed into a Berlin Christmas market REUTERS Berlin Christmas market lorry attack A person is carried into an ambulance REUTERS Berlin Christmas market lorry attack View of the lorry that crashed into a Christmas market in Berlin, killing at least nine and injuring at least 50 people AFP/Getty Berlin Christmas market lorry attack Rescue workers push a person on a stretcher to an ambulance Getty Berlin Christmas market lorry attack Firefighters assess the damage after the lorry rammed the Christmas market, killing 'at least nine', and injuring more than 50 people AP Berlin Christmas market lorry attack Firefighters stand beside a toppled Christmas tree at the site of the suspected terrorist attack in a Berlin Christmas market AP Berlin Christmas market lorry attack Damaged stalls at the scene of the incident at a Berlin Christmas market where at least nine people have been killed EPA

Berlin Police said they had received more than 500 tips by Tuesday night, including 80 being followed up as leads as the country continues to mourn the atrocity.

A huge manhunt is on the way for the culprit, who fled the scene in central Berlin on Monday night after hijacking the lorry to carry out the atrocity, killing its Polish driver.

At least 12 people were killed and dozens more injured in the attack, which has sparked anger against German security services and Angela Merkel’s government.