A man armed with what appeared to be a small knife tried to hijack a Paris-Rome flight overnight and take it to Libya.
Officials in Italy say the man assaulted a flight attendant and demanded the plane divert to Tripoli.
However he was overcome by crew and passengers on flight AZ329 while the captain radioed ahead to police who arrested a suspect when the Alitalia plane landed safely in Rome.
The flight attendant suffered minor injuries according to reports and was treated at a first aid station at Rome airport. It appears there were no other injuries.
Some reports suggest the man may have been of Kazakh origin.