Police Say I-80 Murder Suspect Had Handgun Used In Crime

By Jami Brinton, Reporter

IOWA COUNTY - Authorities found Peter Riggs with the handgun they say was used to kill a rest stop employee Saturday night along Interstate 80.

Riggs, 31, of Columbus, Neb., is charged with first-degree murder in the shooting death of Jeffrey McAdam, 46, of Victor. A truck driver found McAdam dead in the men's room at the westbound rest stop near mile marker 208.

Iowa County Sheriff Robert Rotter said a Johnson County Sheriff's Deputy arrested Riggs between 10 p.m. and 11 p.m. Saturday night, about three hours after the shooting.

"A hand gun was the murder weapon and the weapon was found in Riggs possession," Rotter wrote in an e-mail to various media.

McAdam had a single gunshot wound, authorities said, but Rotter would not say Tuesday where the wound was located.

"There has been no information come to light thus far that indicates the suspect and victim ever met before the murder," Rotter wrote.

Rotter said investigators have talked to witnesses in the case and he is confident they will be able to determine what happened before the shooting.

Riggs is being held at the Iowa County Jail in lieu of $1 million bond.

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