Rapper Earl Simmons, better known as DMX, is housed in a mental-health unit at an Arizona State Prison Complex facility called Alhambra near 25th street and Van Buren.

DMX was sentenced to a year in jail (minus 113 days served) on December 16, after he pleaded guilty to violating the terms of his probation. At his sentencing, Judge Christine Mulleneaux told him she believes he has “an undiagnosed mental condition,” possibly bi-polar disorder.

DMX’s manager, Nakia Walker, wouldn’t comment specifically on whether DMX might have a mental disorder, but she says she wasn’t surprised when he was moved to a mental-health unit. The rapper himself always has refused to comment on speculation about his mental state. In 2001, he threatened to beat up writer William Shaw for asking about it in a Blender magazine interview. “Waaaay too personal,” DMX said.

The embattled hip-hop star is incarcerated for the 13th time. His record includes more than 25 arrests across the nation, 11 felony convictions, and 15 misdemeanor convictions.

Arizona Department of Corrections files confirm that DMX was admitted to the Flamenco Mental Health Unit at Alhambra on December 20. According to Walker, he will not be allowed to have  visitors for 30 days.