Two Layton teenagers charged with attempted homicide in connection with a shotgun attack on a Utah Highway Patrol trooper were returned to Utah Monday after waiving extradition from Nevada, where they were apprehended.

Jared Valentine, 18, and Michael Polete, 17, are being held on $25,000 bail in the Davis County Jail.The two were arrested following a desert manhunt near Wells, Nev., in connection with the Aug. 8 shotgun attack on Utah Highway Patrol trooper John T. Mitchell.

Although Polete is a juvenile, Layton Police Sgt. Ross Lefevre said he is being charged as an adult because of the seriousness of the crime and because he turns 18 shortly.

According to Sgt. Dan Miller of the Wells, Nev., Police Department, the two teenagers turned themselves in Saturday after they were spotted fleeing from a ranch house 15 miles northwest of Wells on Friday afternoon.

A manhunt was organized Friday and early Saturday, which the pair apparently eluded Friday night by hiding out in a haystack, police said.

The two were charged Thursday after a joint investigation of the shooting by Layton Police and Davis County Sheriff's Department deputies.

Mitchell attempted to stop a car that ran a stop sign in Layton about 1:30 a.m. Aug. 8. He pursued it and, after a short chase, had his UHP car disabled by three or four shotgun blasts from a passenger in the car, according to UHP reports.

The blasts hit Mitchell's vehicle in the windshield, radiator and front tire, UHP reported. Mitchell suffered cuts from flying glass but was not seriously injured.