POINCIANA -- Polk County Sheriff's deputies saidtwo men armed with gunsand a machete forced a 20-year-old man to tie up his father, then raped his mother and poured bleach over her body.
"This was so horrific that it should stir the inner soul of everyone in the community," Polk County Sheriff Grady Judd said.
One man has been arrested: 33-year-old Richard Delgado Cruz of Kissimmee was charged Thursday with sexual battery, armed burglary, armed robbery and possession of a weapon by a convicted felon.
He is being held at thePolk County Jail without bail.
It's unclear whether he has retained an attorney.
Past arrest records show Cruz served time in Pinellas County for murder in 2000 and a home invasion robbery in 1996.
He ultimately got a reduced charge of manslaughter and was released from prison in 2008.
The attack happened Monday night in the central Florida community of Poinciana.
Judd said Thursday that the suspects are brothers and added that Cruz's brother -- Danny Cruz -- is still at large. Cruz is believed to be in the Kissimmee or Osceola County area.
Officials are offering a $10,000 reward through Heartland Crime Stoppers for tips leading deputies to an arrest.
The Lakeland Ledger reported the masked suspects approached the 20-year-old while he stood outside a house talking on his phone and forced him into the residence, where his mother and father live.
Once inside, the men demanded money and jewelry.
At that point, the mother came out of the bathroom after having taken a shower, Judd said.
The men took turns raping her and then thoroughly washed her with bleach -- in an attempt to erase evidence, officials said.
The woman is recovering from the attack, Judd said.
He added that the suspect left with about $500 in cash and a few coins.
The masks and gloves the men wore appeared to be new.
Judd asked anyone who might have sold them to men matching the descriptions to contact authorities.