HONOLULU (CBS/AP) — A teenager who stowed away in the wheel well of an airplane for a five-hour flight from California to Hawaii is resting at a Honolulu hospital.

Hawaii’s Department of Human Services said in a statement Tuesday that child welfare services officials are continuing to work to ensure his safe return home.

READ MORE: UPDATE: Woman Accused of Starting Fawn Fire Was Boiling Bear Urine to Drink

The department didn’t indicate when the 15-year-old would be going back to California.

American Medical Response air and ground ambulances flew him from Maui to Oahu and drove him to a Honolulu hospital Sunday evening.

American Medical Response Maui operations manager Curt Morimoto said the child was in very stable condition.

A law enforcement official who spoke Tuesday on the condition of anonymity said surveillance video from Mineta San Jose Airport shows the boy was on the airfield seven hours before the jet departed.

The official told the Associated Press that the 15-year-old got on the airfield a little after 1 a.m. Sunday and went undetected for hours in what is supposed to be a secure area.

Officials said the boy was knocked out most of the 5 ½-hour flight and didn’t regain consciousness until an hour after the Hawaiian Airlines plane landed.

Previous studies suggest fewer than 25 percent of people who attempt wheel well stowaways survive such a flight, even at shorter distances.

© Copyright 2014 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.

MORE NEWS: Retailers Warn Supply Chain Delays Could Wreak Havoc On Bay Area Holiday Shopping Season