A boat has been deployed in a northeast Iowa lake to help an FBI dive team prepare for a sonar search for two missing cousins.

Black Hawk County Chief Deputy Sheriff Rick Abben (A’-behn) said Friday the three people in the boat are checking the Meyers Lake in Evansdale before the dive team enters the water and begins using its specialized equipment.

The team’s searching for 10-year-old Lyric Cook-Morrissey and 8-year-old Elizabeth Collins. They’ve been missing since they went for a bike ride on July 13. Their bikes were found near the lake.

Agents in FBI shirts spent several minutes hooking up equipment before the boat pushed off into the lake.

Abben says the dive team has arrived in the area and is planning the logistics of their dive.