Belgian police missed multiple chances to unmask the ISIS terror cell before they carried out massacres in Paris and Brussels, a secret report has claimed.

Jihadists butchered 130 people in the French capital on November 2015 before extremists killed 32 in attacks on Brussels airport and Metro the following March.

A confidential report has revealed that police in Belgium had numerous opportunities to expose the terror network before they went on the rampage in the two capital cities.

Jihadists butchered 130 people in the French capital in November 2015 before extremists killed 32 in attacks on Brussels airport and Metro the following March

Officers are said to have stopped a vehicle driven by one of the Paris attackers, Brahim Abdeslam (right)- whose brother Salah (left) was later captured - in 2015, and found him with a booklet about 'parental consent for the Jihad'

The Wall Street Journal says it has seen a report by the Comite P watchdog agency which is looking into the work of Belgian police since the two massacres.

In one example, officers are said to have stopped a vehicle driven by one of the Paris attackers, Brahim Abdeslam - whose brother Salah was later captured - in 2015, and found him with a booklet about 'parental consent for the Jihad'.

He was arrested for drug possession but, despite being on the terror watch list, was released after a short questioning.

Officers also failed to examine a USB drive concealed behind the car radio, the report claims, adding that an email address the suspect supplied s_orry@hotmail.com, was fake - another detail that went unnoticed.

According to the Wall Street Journal, the report also reveals that the Abdeslam brothers were linked to other suspects while police did not follow up when Salah used a picture of the ISIS flag as his social media profile picture.

On March 22, ISIS-linked attackers struck Brussels airport and the metro killing 32 people

It comes just days after it was revealed that Belgium had prevented six attacks over the past two years, with the country still a prominent target for jihadist assaults.

In January 2015, Belgian police dismantled a cell in Verviers in the east of the country which was later seen as the rough beginnings of the jihadist group that attacked Paris in November that year.

That team of extremists used machine guns and suicide bombs to murder revellers at the Bataclan music venue, at bars and restaurants and outside the Stade de France stadium.

And on March 22, ISIS-linked attackers struck Brussels airport and the metro killing 32 people, despite the arrest in the Belgian capital only four days earlier of the last surviving jihadist from the Paris attacks, Salah Abdeslam.

Since that attack, Belgian police and intelligence services have seen a major increase in information, 'up to 600 tips daily', Jacobs said.