KECSKEMET, Hungary — Four men suspected of being involved in the deaths of 71 migrants found in a truck in Austria were placed under preliminary arrest Saturday by a Hungarian court. The preliminary arrests will be in place until the suspects are indicted on Sept. 29, at the latest, said Ferenc Bicskei, president of the Kecskemet Court. The court agreed with prosecutors that the severity of the crime and the risk that the suspects would flee justified their arrest.