JACKSONVILLE, Fla. -- A 15-year-old girl charged along with her 22-year-old boyfriend in the murder of a Melrose man was returned from Texas overnight and booked into the Putnam County Jail early Friday morning.

Morgan Amanda Leppert, who was reported missing April 22 and believed with Toby Lee Lowry when deputies found the body of 66-year-old James Stewart on May 1. When deputies found the dead man's telephone number in Leppert's cell phone records and the couple was spotted headed west on Interstate 10 in Stewart's stolen pickup truck, a nationwide Amber Alert was issued.

Leppert and Lowry were arrested in El Paso, Texas, two days after Stewart's beaten, stabbed and suffocated body was found in his home.

Lowry was extradited from Texas on May 10 and booked on charges of murder, car theft, interference with custody of a child and panhandling.

Leppert remained in the custody of juvenile justice authorities in Texas until Thursday.

After appearing before a judge Friday morning to hear the murder charge against her, Leppert will be turned over to the custody of Florida's Department of Juvenile Justice.

Prosecutors expect that she will be tried as an adult.