PowerPoint Show by Andrew

The polish lorry was hijacked when it arrived in Berlin and hours later was driven through Christmas market crowds. The main suspect was pursued on foot and arrested - but it appears he is the wrong man.

A body dragged under the lorry's wheels lies covered with a gold blanket this morning at the rear of the stolen lorry.

New photographs have emerged from the scene showing how the road around the lorry was strewn with bodies, including a body by the cab.

The vehicle mounted the pavement before tearing through stalls and shoppers in the market on Breitscheidplatz Square, outside the Kaiser Wilhelm Memorial Church in the German capital's main shopping area.

In this photo, the body of one of the victims lying under the tires of the trailer was blurred out intentionally.

The 80metre stretch of Berlin pavement was stained with blood left when the lorry driver steered into the crowds.

The truck company's tracker system says that it was started and stopped repeatedly after the hijacking, suggesting the driver was learning how to drive it.

There are 12 dead - but 14 are critically or seriously injured in intensive care units across the country.

There were dozens of ambulances and fire engines at the scene as they worked to recover bodies and help those injured.

An injured man is pushed to an ambulance as scores of others are treated at the scene.

The vehicle left a trail of devastation in its wake, in a chilling echo of the deadly terror attack in the French city of Nice in July - and comes just one hour after the Russian ambassador was shot dead in Ankara.

A woman survivor is being taken to the hospital.

An injured person is being taken to an ambulance.

An eyewitness said: 'I just saw this huge black truck speeding through the markets crushing so many people and then all the lights went out and everything was destroyed'.

One eye witness said the lorry had no lights on when it smashed into the market.

Police detectives climbed over the debris to search the truck, as investigators worked through the night to establish what had happened.

A number of British tourists were among those who witnessed the appalling crash - which happened despite authorities being warned of a possible attack.

Aerial shots from the scene show the devastating aftermath at the crash scene and debris around the truck.

Police stand outside a tent near the Christmas market in Berlin as those injured in the attack are treated.

Armed police are standing guard at the entrance to the market and around Berlin as security is tightened.

Police and the security services are hunting for the Christmas market killer and admit a second terror attack could be imminent.

The lorry used to kill a dozen people in Berlin last night was towed away from the scene as a 23-year-old asylum seeker was being interrogated.

White powder used to soak up blood left  by the dead - one witness described a 'rivers of blood' running through the market.

German Chancellor Angela Merkel (left) lays white roses at the blood- stained scene in Berlin amid fears a gunman may still be on the loose.

This is a clear view of the path the lorry took through the now-destroyed Christmas market in central Berlin.

At least 12 were killed and another 48 injured when a 25-ton hijacked truck ploughed through the busy festive market on Breitscheidplatz Square.

This is the path taken by the killer truck driver - and shows how it mounted a narrow strip of pavement around 80metres in length with the aim of killing as many people as possible.

The shattered glass on the windshield of a truck the morning after it ploughed through the Christmas market.

Inside the cab was the Polish driver who the lorry was hijacked from - he may have been murdered before the crash.

Teams were working on the lorry all morning before it was taken away to a secure unit to be combed over for clues.

The smashed front of the lorry used to kill people enjoying the run-up to Christmas. A wreath from one of the stalls was lodged in its destroyed windshield.

The terror suspect is believed to have shot dead the Polish driver of the truck before using it as a weapon hours later.

The area around the lorry was strewn with wreaths, garlands and even baubles torn from market stalls.

The lorry was given a police escort today as it was taken away for forensic examination.

A sea of candles and flowers cover the pavement close to where the terror attack took place 24 hours ago.

The historic Brandenburg Gate in Berlin is tonight illuminated in the colours of the German flag in tribute to the dead.

A woman formed a cross with candles on the pavement near to where the lorry ploughed into the Christmas market, killing 12.

These are all the terror attacks carried out on German soil in the past year, claiming the lives of 22 people.