Former Bachelorette hopeful Kasey Kahl is back behind bars after police charged him with assault stemming from the guy (and girl) he beat up this year.
While under the influence of PAINT THINNER, allegedly.
More than half a year after the January 15 incident, TMZ says prosecutors finally decided there was evidence to charge Kasey Kahl with felony assault.
Charges were filed and Kahl was arrested early Friday:
Officials say Kahl was drunk and on drugs when he attacked a man, Richard Cheney, at a Fresno, Calif., club, after which Cheney says Kahl bashed his girlfriend's face.
Kahl, who also starred on 2011's Bachelor Pad 2, has been charged with felony assault, battery with serious bodily injury, and drunken disorderliness.
Police believe Kahl was under the influence of both alcohol and a drug called toluene - an inhalant associated with paint thinners - during the attack.
Reps for the ex of Vienna Girardi have maintained he's innocent and say the victims are "antagonizing" him in a bid to get "15 minutes of fame."