BRUSSELS—A second attacker is suspected of taking part in the bombing this week of a Brussels subway train and may be at large, according to Belgian and French media reports, amid growing signs that the same Islamic State cell was behind the attacks in Brussels and bloodshed in Paris last year.
The chief suspect in the Paris attacks, Salah Abdeslam, was summoned to court in Brussels on Thursday morning after his arrest last week in the Belgian capital. His lawyer said Abdeslam is not fighting extradition to France, which wants him to face potential terrorism charges.
The Islamic State group claimed responsibility for the attacks in Brussels and Paris, which have laid bare European security failings and prompted calls for better intelligence cooperation and a tougher response to Islamic State extremists.
Belgian prosecutors have said at least four people were involved in Tuesday’s attacks on the Brussels airport and a subway train, including brothers Ibrahim and Khalid El Bakraoui, identified as suicide bombers. European security officials identified another suicide bomber as Najim Laachraoui, a suspected bombmaker for the Paris attacks.
