The Cheyenne teen believed to have pulled the trigger in Saturday night's fatal shooting at 1008 Drew Court has been arrested.

Laramie County Sheriff's Department spokeswoman Captain Linda Gesell says detectives found 18-year-old Austin Daniel in room 127 of the Rodeo Inn around 9 a.m. this (Wednesday) morning. [The original statement issued by the sheriff's office had the suspect name as Austin Daniels. We have edited this post to the correct name. They also named the motel as the Rodeway Inn, but officials corrected that information as well.]

"He had a prior warrant for failing to appear with his underlying charge being conspiracy to commit burglary so we placed him in custody for that," said Gesell.

Gesell says Daniels also had a Smith and Wesson .380 handgun in his possession, which may have been the gun used in the shooting that killed 19-year-old Mark Dreiman.

"As a result of the autopsy they said it could be two different calibers of gun, a .380 or a .9 mm," said Gesell. "Now that we have the gun we'll have to do some more testing on that."

Daniel has been booked in the Laramie County Jail on manslaughter charges and is waiting to be formally charged by the District Attorney's office.

Dreiman's family believes the shooting was an accident.