Update on the Jailed Musicians

A Mexican judge lifted the arraigo of 22 musicians who were arrested in December while playing at a party attended by Arturo Beltrán Leyva and Edgar Valdez, but issued arrest warrants for three of the other members of Cadetes de Linares and Torrente. The article doesn't mention why these three are being singled out, presumably because the PGR offered no explanation either. Are these three scapegoats to allow the government to save face after jailing more than two dozen musicians for almost three months? Or is there a legitimate reason?