A 9-year-old boy who passed through security at Minneapolis-St. Paul International Airport and caught a flight to Las Vegas without a ticket had previously gained entry to a water park without a ticket and stolen a car, a local newspaper reported on Tuesday.

The apparent ease with which the boy, who is from Minneapolis, was able to get through security and onto a flight on Thursday raised questions about airport and airline security.

The boy is the son of a woman who works at the airport and county child-protection staff have reviewed his family situation four times since December, according to an email from Janine Moore, area director of Hennepin County's Human Services and Public Health Department, which was obtained by the Minneapolis Star-Tribune newspaper.