Redmond O'Neal, the son of the late Farrah Fawcett and Ryan O'Neal, successfully completed a drug diversion programme.
O'Neal's graduation from the treatment programme led to the dismissal of two felony drug-related cases, a district attorney spokeswoman said.
The 25-year-old will remain on probation for another two years for a case in which he brought drugs to a jail facility.
Rapper indicted for violation
Rapper Foxy Brown was indicted on charges of violating an order of protection stemming from a 2007 confrontation with her neighbour in New York City.
Prosecutors said Brown violated the order in July by screaming at neighbour Arlene Raymond before bending over, baring her buttocks at Ms Raymond and showing her underwear while shouting an obscenity.
The 31-year-old Brown was issued the order of protection after pleading guilty in 2008 to menacing Raymond with her cell phone.
Shipwreck to be identified
The US state of Michigan, France and private divers reached an agreement to finally determine whether a Lake Michigan shipwreck is the Griffin, which sank while loaded with furs in 1679.
There will be no immediate effort to remove anything from the ship.
But Steve Libert of Purcellville, Virginia, the diver who discovered it in 2001, said it is possible the wreck eventually could be raised and publicly displayed if it is confirmed to be the Griffin.
Blogger made death threats
A blogger being tried for a third time was convicted of making threats against US federal appeals court judges in Illinois.
A New York City jury deliberated for less than two hours before finding Hal Turner guilty of making death threats.
The three judges from the 7th US Circuit Court of Appeals testified during the trial in Brooklyn that they were alerted by their staffs in 2009 to postings by Turner protesting against their ruling supporting gun control.