Drones have been deployed to aid in the search of the kidnapped Nigerian girls.

The United States has deployed drones to Nigeria to help search for more than 200 schoolgirls kidnapped by militant group Boko Haram, officials confirmed Wednesday.

White House Press Secretary Jay Carney said “unmanned, unarmed” aircraft had joined reconnaissance flights over a swath of Nigeria where Boko Haram is believed to be holding the girls hostage. Carney cautioned during a news conference that the area of greatest suspicion still covering an expanse of land “along the size of West Virginia.”

Read it at TIME.