Authorities say they have arrested Coolio on suspicion of drug possession.
The rapper was arrested and booked after being stopped at Los Angeles International Airport on Friday morning.
Jail records indicate the 45-year-old was apprehended on allegations of felony narcotics possession. Coolio, whose real name is Artis Leon Ivey Jr., was being held pending $10,000 US bail.
The arrest was first reported by the celebrity gossip website TMZ.com, which said he was found with crack cocaine while going through security.
Coolio's manager, Susan Haber, said she had not yet spoken with the rapper and could not comment.
The rapper, who gained fame for his 1995 single Gangsta's Paradise, was arrested in June on a misdemeanour warrant for driving with a suspended license.