Law enforcement sources tell TMZ, 28-year-old ex R&B singer Houston,  was driving erratically near Malibu Wednesday, so cops pulled him over.

 

According to officers, they  approached the vehicle and it smelled of marijuana. When police asked Houston questions, we’re told his answers were incoherent.

 

Houston was then placed under arrest on suspicion of DUI. Sources say, cops believe Houston was driving under the influence of drugs not alcohol.

 

The singer was released from jail Thursday. Calls to Houston were not returned.

 

In 2005 the singer had a breakdown — the singer reportedly first attempted suicide by jumping out of a window while under the influence of PCP. His friends stopped him, but when they locked him in a first-floor room, Houston gouged his eye out with a plastic fork.

 

Houston was institutionalized for a year following the incident. He has since attributed the whole thing to “the pressures of fame.” Check out the mugshot below.

 

 

Don’t remember him? Check out the video below: