Michael Douglas' son has been placed in solitary confinement.
The 68-year-old Wall Street: Money Never Sleeps actor's eldest son Cameron - who is serving a 10-year sentence for drug dealing - was moved to an isolated cell earlier this month after failing a drug test at the federal prison in Loretto, Pennsylvania.
A prison source told the New York Post's Page Six that the 34-year-old budding actor's friend and tattoo artist Billy Trent was also immediately sent to solitary confinement after being found with an illicit substance.
It is not yet known whether Cameron will face additional jail time for failing the test or how long he will be kept in isolation.
His father - who is married to Catherine Zeta-Jones - attended his court hearing last month as he appealed against the 54 extra months of prison time that were added to his current five-year sentence for narcotics distribution.
