The source did not specify how Belisario had violated the policy.
During the 2010 season, Belisario left the Dodgers for over a month to receive treatment in a substance-abuse program after facing drunk driving charges and making it difficult for him to receive a visa. According to the LA Times, he missed more than a month of the regular season to receive treatment in a substance abuse program finishing the season with a 5.04 ERA.
The hard-throwing Venezuelan missed all of last season with visa problems, but had received a valid visa for the next five years.
He is still expected to be in Arizona for the start of spring training, despite not being on the Dodgers' opening-day roster.