A slumber party prank call about a bomb on an airplane has landed two Medford girls in trouble.

A slumber party prank call about a bomb on an airplane has landed two Medford girls in trouble.

Medford police tracked down a 13-year-old and a 12-year-old this week in an investigation into a threat left on the voice mail of a Medford airport administration employee last month about a bomb placed on a plane, Medford police Lt. Tim Doney said.

The employee returned from vacation on July 31 and found the message, which had been left at about 4 a.m. on July 27.

Airport authorities and Medford police investigated and identified who had placed the call and from where.

"It was a slumber party gone bad," Doney said.

He said three girls were making prank calls and found the airport administration number. Two made the call with the fake threat.

The 13-year-old was cited on charges of disorderly conduct and harassment and released to her parents. The facts of the 12-year-old's involvement have been sent to Jackson County Community Justice juvenile services for review on whether charges are necessary, Doney said.