NEWARK, N.J. — A traveler who remained at Newark Liberty International Airport after missing two flights faced numerous charges Saturday for allegedly beating a homeless man with a chair as the man was sleeping.

The Port Authority of New York and New Jersey tells NJ.com that 26-year-old Leonidas Monroy Sandoval of Guatemala began acting erratically after arriving at the airport Thursday and missing his flights. He allegedly beat the unidentified man early Saturday morning and also threw a chair at Port Authority police.

The 62-year-old victim was struck in the head numerous times and knocked unconscious, Port Authority police spokesman Joe Pentangelo said. The man was hospitalized with “serious injuries.” Further details were not disclosed.

Authorities said the alleged attack apparently was unprovoked; Sandoval also was injured.

Authority spokeswoman Erica Dumas said Sandoval was arrested and charged with aggravated assault, aggravated assault on a police officer and weapons offenses. It wasn’t known if Sandoval has retained a lawyer.

Sandoval had missed two flights to Guatemala and in both instances was escorted by police out of the terminal’s secure area, Dumas said. He was booked on another flight that was due to depart from Newark later Saturday.