Akrouh blew himself up in the St. Denis apartment where attacker ringleader Abdelhamid Abaaoud was holed up.
The new images show Abdeslam with an accomplice at a gas station near the Belgian border.
Prosecutors made the discovery in a December raid in the Schaerbeek district of the Belgian capital.
The tenth suspect linked to the Paris attacks was detained in the neighbourhood of Molenbeek.
Authorities on Wednesday called off the traditional New Year's Eve fireworks display in Brussels.
The eighth suspected attacker in Paris remains at large, one month after the night of horror.
A young German shepherd named Dobrynya is a replacement for the dog killed in a Paris police raid.
The November 13 attacks in Paris killed 130 people and injured hundreds.
New European Parliament report notes more than 150 attempts to smuggle toxic materials.
There are multiple theories as to the whereabouts of the eighth Paris attacks suspect.
Death threat sent to Attadamoun Mosque in Molenbeek, home of Paris attack suspects.
The Paris killers were linked by drug-dealing, drink and petty crime, not religion.
Belgian authorities investigate a suspect powder that police later said turned out to be flour.
Schools and the metro have reopened in the Belgian capital.
Belgium issued a warrant for a new suspect on Tuesday.
Salah Abdeslam, suspected gunman in the Paris attacks, remains at large, Belgian authorities say.
Authorities put Brussels on maximum alert, closing the metro system, along with museums, shopping centers and other public spaces.
Authorities warned people to avoid crowds, raising the threat level to four.
The government will increase police powers for raids and house arrests.
Manuel Valls says French authorities "must not rule anything out" after Paris attacks.
The operation focused on friends and family of suspect Bilal Hadfi
The search continued for Salah Abdeslam and others thought to be responsible.
On Friday, the Brussels resident blew himself up in Paris on orders from ISIS.