PARIS — A suspect in the Brussels attacks which killed at least 31 people at Brussels’ airport and subway on Tuesday has been arrested by authorities. The suspect has not yet been identified.Belgian media previously reported the captured suspect was Najim Laachroui, who was seen on airport video surveillance yesterday with two other suspects, including Ibrahim el-Bakraoui — one of the two suicide bombers responsible for the Brussels airport blasts.el-Bakraoui’s brother, Khalid, is suspected to be the suicide bomber of the subway blast.Laachrou, who is on the run, is suspected to be the group’s supplier of ammunitions and explosive vests for the Belgium and Paris attacks which killed 130 people.