- Singer and his father were accused of being abusive to flight attendant
- They also were accused of refusing pilot's warning to stop smoking pot
- FAA says it "found no evidence that the passengers violated" regulations
Federal officials have cleared singer Justin Bieber and his fellow air passengers after an investigation into whether they interfered with a flight crew in January.
The Federal Aviation Administration released a statement Friday saying it has closed its investigation after it "found no evidence that the passengers violated Federal Aviation regulations."
CNN reported earlier that according to a law enforcement sources, Bieber and his father were "extremely abusive verbally" to a flight attendant during a flight on a chartered Gulfstream IV aircraft from Ontario, Canada, to Teterboro Airport in New Jersey in advance of the Super Bowl.
Justin Bieber and his father refused a pilot's repeated warnings to stop smoking pot on the flight, according to a report by U.S. Customs and Border Protection, which was read to CNN.
Under FAA regulations, "No person may assault, threaten, intimidate, or interfere with a crew member in the performance of the crew member's duties aboard an aircraft."