A Mexican man is behind bars in federal custody after witnesses said he lunged toward the cockpit during a flight from Los Angeles to Honolulu Saturday night.

Passengers arriving on Saturday night's Northwest Airlines flight told authorities they were scared when Santiago Lol Tizol, 37, raged through the aisles, ignoring the flight crew and threatening to kill a baby.

Tomorrow, Tizol is expected to be charged with interference with a flight crew, according to the FBI. Tizol is being held at the Federal Detention Center in Honolulu awaiting his first court appearance. Conviction could result in a penalty of up to 20 years in prison and a fine.

The FBI would not say if drinking, drugs or mental illness impaired Tizol. A Federal airline security official said they do not think Tizol was a terrorist. The incident at Honolulu Airport happened just three days after a Federal Air Marshall killed a man claiming to have a bomb in his backpack when boarding an American Airlines plane in Miami.