Updated

A law enforcement official says the search for two missing Iowa girls is being classified as an abduction after an FBI team failed to find their bodies in a lake.

Black Hawk County Chief Deputy Rick Abben told reporters Friday that the case was reclassified after FBI divers were confident the bodies of 10-year-old Lyric Cook-Morrissey and 8-year-old Elizabeth Collins are not on the bottom of Meyers Lake in Evansdale.

The cousins disappeared a week ago while riding bikes near the lake.

Abben says investigators have sent evidence to a state crime lab for analysis. He would not elaborate or say what the evidence was.

He says investigators do not believe the girls are lost because they would have been found by now.