Brussels attacks - Three more suspects arrested

Added On March 26, 2016

First in Brussels.
Belgian police have arrested three more people suspected of being involved in Tuesday's attacks. 
Investigators say they are still uncertain about how many extremists remain at large. 
Belgian police raided several districts of Brussels on Friday and arrested three more suspects linked to Tuesday's bombings. 
Explosives and bomb-making materials were also found. 
Belgian federal prosecutor's office said the operation was connected to the arrest in Paris on Thursday of an Islamist convicted in Belgium last year and suspected of plotting a new attack.
Nine people in total have been arrested since Thursday in Belgium and two in Germany.
European authorities are hunting down Islamic State militants that link both to the Brussels bombings that killed 31 people and to the attacks in Paris last November that killed 130.
IS suicide bombers hit Brussels airport and a metro train on Tuesday in the worst such assaults in Belgian history. 
Investigators believe they were carried out by the same cell behind November's gun and bomb attacks in Paris.