ISIS may have planned to attack the Belgian prime minister Charles Michel after pictures and plans of his residence and office were found by police

ISIS may have planned to attack the Belgian prime minister Charles Michel after pictures and plans of his residence and office were found on a laptop close to a raided flat linked to the terrorists behind last week's bombings.

Police were searching the apartment, in the Schaerbeek district of Brussels, which had been used by the men suspected of carrying out the devastating bombings in the Belgian capital that left 35 dead.

The laptop was found in a bin outside the flat, which investigators say was used by the Brussels Airport suicide bombers, according to the local business daily paper De Tijd.

The official residence and office of the Prime Minister is located at 16 Rue de la Loi, one of the principal streets of Brussels that runs thought the centre of the city and houses many government ministries and EU buildings.

Belgium's federal prosecutors declined to comment on the report, which also appeared in French-language newspaper L'Echo.

A spokesman for the Belgian Prime Minister was not immediately available for comment.

The news comes as haunting new photos, taken two days after the Brussels bomb attacks, have been released that show how the city's bustling airport was turned into a tangled mesh of steel, have been released.

It could take months before the international airport is fully operational again.

The eerie images of the bombed out shell of Brussels' Zeventem airport were taken as rescuers sifted through the debris of what was left of the departures hall.

Smears of blood staining the floors, and forgotten belongings are the only clues that the deserted building was once full of passengers.

Just seconds before Tuesday morning's blasts, CCTV images showed a terminal full of holidaymakers and business people blissfully unaware of the horror that was about to unfold.

The official residence and office of the Prime Minister is located at 16 Rue de la Loi (pictured), one of the principal streets of Brussels

All unaware except for three men who were about to unleash the terror - two already rigged with concealed explosives with single black gloves hiding the triggers, and one with a hat and dressed all in white.

Two of them, now believed to be Najim Laachraoui and Ibrahim El-Bakraoui, blew themselves up within seconds of each other.

One of the blasts hit the heart of the packed American Airlines check in desk, and the other struck outside Starbucks as early morning travellers ran for their lives.

The third bomb - thought to be comprised of the heaviest explosive - was left abandoned as the 'man in white' fled the scene.

Carnage: The once-bustling departure hall of Brussels' Zaventem airport was left unrecognisable after the double explosions that killed 20 people. Pictured, response crews clear the debris left behind by the blasts

Horror: The floor of the departures hall is still covered in blood, surrounded only by the remains of check in desks and shops

Destroyed: Parts of the airport where the bombs exploded have been left almost unrecognisable, filled only with metal bars and twisted plastic chairs

Some images of the airport render it almost unrecognisable – twisted plastic chairs are covered in dust as tables have been flung against the walls.

Escalators have stopped. Their glass barriers cracked and surrounded by scattered debris.

In one photo, a baby's pram has been abandoned amid roped barriers at check in, left behind as families fled.

The check in desk of Brussels Airlines has been completely destroyed with panels hanging off and metal poles bent out of shape.

At the site of the second blast, smears of blood can still be seen on the floor.

It comes as Brussels Airport chief executive Arnaud Feist told Belgian business newspaper L'Echo it could take 'months' for the airport to be fully operational again.

Chaotic: A shoe, left behind in the rush of passengers fleeing for their lives, lies abandoned in the departures hall following the attacks

Shattered: Twisted plastic chairs have been left covered in broken ceiling tiles as wires trail across holidaymakers' abandoned luggage. It comes as authorities estimate the airport won't be up and running for months yet

Terror: The Brussels Airlines check-in desk has been left a twisted mass of metal, with panels knocked off by the force of the explosions

The airport, closed since the blasts wrecked the departure hall, was readying to stage a test run on Tuesday involving hundreds of volunteer staff to determine if it was ready to resume flights, albeit in a very limited capacity, on Wednesday.

The attacks left up to 35 people dead – including multiple suicide bombers – after homemade explosives were detonated in the packed departures hall of Zaventem airport and Brussels Maelbeek metro station.

Of the 340 people injured in the attacks, 96 remain in hospital.

Many foreign nationals were among the victims, testament to the cosmopolitan nature of a city that is home to both the European Union and NATO.

Abandoned: Photographs taken just two days after the terror attack show the departure hall completely deserted, with just a pram left behind as terrified passengers fled for their lives

Frozen: Escalators in the once-bustling departures hall have stopped, while glass on the barriers surrounding them was left shattered. Of the 340 people injured in the attacks, 96 remain in hospital