BRUSSELS: Belgian authorities charged four more suspects Saturday with “participating in terrorist acts” linked to the deadly suicide bombings in Brussels, the federal prosecution office said.

Arrested suspects Mohamed Abrini, Osama K., Herve B. M. and Bilal E. M. have all been charged with participating in “terrorist murders” and the “activities of a terrorist group” in relation to the March 22 suicide bombings at Brussels’ airport and subway, the prosecution office said. The attacks killed 32 people and wounded 270 others.

Two other suspects arrested in the last couple of days were released “after thorough interrogation,” it said.

The charges follow days of arrests and raids in in Brussels and could give investigators new insights into the Daesh group cell believed to have carried out both the attacks in Brussels and the Nov. 13 attacks in Paris, which left 130 dead in the French capital.

Osama K. was identified by Swedish media as Osama Krayem, who is known to have left the Swedish city of Malmo to fight in Syria. The prosecutor’s office accuses him of being the second person present at the attack on the Maelbeek subway station in Brussels and of being present at a shopping mall where the luggage used in the airport attack was purchased. Swedish officials had no immediate comment on Osama K.

The statement describes Herve B. M. as a Rwandan citizen arrested at the same time as Krayem who is accused of offering assistance to both Abrini and Krayem.