MINNEAPOLIS (AP) - A government memo says a 9-year-old boy who evaded security and stowed away on a flight from Minneapolis to Las Vegas has a history that includes car theft, sneaking into a water park and contacts with child protection investigators.

In an email, Janine Moore, area director of the Hennepin County Human Services and Public Health Department, told other county officials that staffers have conducted four assessments on the boy's family since December. She wrote that he's known as a "challenging" child.

Las Vegas authorities took the boy into custody when the plane landed Thursday.

Moore didn't name the boy or his family, but said his mother works at the Minneapolis airport.

She did not immediately return calls from The Associated Press seeking comment.