A 39-year-old Moroccan named Lazez A, detained last week and also resident in western Brussels, was the fourth person to be charged in Belgium
Police found two handguns and traces of blood in his car, the prosecutor said in the statement.
On Tuesday, a fifth, unidentified, person was charged, the statement added. Two other people arrested at the same time on Monday had been released.
Meanwhile, attacks ringleader Abdelhamid Abaaoud returned to the area where gunmen and suicide bombers had earlier murdered people in cafes and bars, the Paris prosecutor Francois Molins told a news conference.
Molins said Abdelhamid Abaaoud boarded a metro going back to the centre of Paris and the phone he was believed to be using was detected in the 10th, 11th and 12th districts, and by the Bataclan concert hall while attacks there were still under way.