FERNANDINA BEACH, Fla. -- A 23-year-old prisoner who escaped from a Fernandina Beach hospital early Friday morning was found about six hours later hiding in the truck of his girlfriend's car.

John Davis was back in custody by 3 p.m. on charges of escape, assault and drug charges.

Deputies also arrested a 17-year-old girl on charges of lying to police. Officials said the Davis' girlfriend will likely be charged with aiding and abetting an escape.

Davis was originally arrested Thursday night on drug charges, but fearing that he had swallowed some cocaine, deputies took him to Baptist Medical Center Nassau for observation.

When a corrections officer picked him up Friday morning to transfer him to jail, deputies said Davis assaulted the officer and ran out the rear door of the emergency room.

"(The officer) went back down to put the shackles, reapply the shackles. At that time, the prisoner assaulted the correctional officer and overtook him physically," Nassau County Sheriff Tommy Seagraves said.

With the officer in pursuit, Davis jumped into a car in the parking lot and demanded that the driver get him out of there, but the driver refused, so Davis fled on foot into nearby woods.

Deputies said he broke into a unit at a nearby senior's apartment complex. When the resident came home, Davis jumped out of the closet and ran outside. Investigators believe the 17-year-old picked him up there and took Davis to his girlfriend's apartment in Nassauville.

Deputies had the girlfriend under surveillance and followed her as she left.

"We made a traffic stop. He was in the trunk of the vehicle," Seagraves said.

The Jacksonville Sheriff's Office initially provided a helicopter and ground units to assist in the search, and the Camden County, Ga., Sheriff's Office has provided K-9 teams to help.

Deputies said Davis had a history of arrests in Nassau County, but none of the charges involved violence, so they did not believe he was dangerous.

Southside Elementary School was placed on lockdown, and Emma Love Elementary was placed on partial lockdown Friday morning because of police activity nearby, but those lockdowns were lifted before noon.

"I'm glad he's in custody. I'm glad nobody got hurt," Seagraves said.