LINCOLN, Neb. (AP) — Five California teenagers have been arrested in Nebraska, suspected of operating an ATM fraud scheme.

The five remained at the Lancaster County youth detention center Monday after their arrests Friday. The Associated Press generally doesn’t name juveniles accused of crimes.

Court documents say Pinnacle Bank staffers found on three of its ATMs electronic devices that surreptitiously record bank card numbers and PIN information. Lincoln Police Chief Jim Peschong says forgers use the information to create new cards for looting the accounts.

Police staked out the ATMs and soon arrested two boys who’d returned to remove the devices. Cellphone information led police to the three other teens.

Investigators suspect the five might be tied to a national criminal enterprise composed mainly of Romanians citizens.