Redmond O'Neal was pulled over for a traffic violation Tuesday when police allegedly found marijuana and heroin in his car.
The cops immediately arrested him, and searched his house where they found a loaded handgun.
His sister, Tatum O'Neal, is hopeful but realistic, saying:
He's an addict. Addicts keep using until they want to stop. We're praying for him every day.
A judge ordered "tough love" for Redmond, keeping him locked up without bail until his hearing on August 24.
This is so incredibly sad. We hope this sends a message to him, because we don't want to see anything worse happening to Redmond!