Law enforcement sources tell TMZ, DMX broke SEVERAL rules in Yuma state prison since January -- including drug possession, failing or refusing a drug test, smoking when he wasn't supposed to, being disrespectful, disruptive, and disorderly ... the list goes on.
A rep for the prison wouldn't specify what kind of drug officials found on the rapper.
All told, DMX had seven disciplinary infractions -- and we're told, he'll be stuck in Yuma prison for AT LEAST another week due to the failed drug test.
X was supposed to be released tomorrow, seven months after he was sentenced to serve time for a probation violation.
