HASTINGS, Neb. (AP) — Southern Nebraska authorities say four people accused of pretending to kidnap children to scare them won’t face charges due to a lack of sufficient evidence.

Hastings Police Chief Pete Kortum says authorities believe the motive to fake-kidnap the kids in March was for the suspects’ amusement.

Police were notified about three separate incidents on March 7. Children told police that a black car with four occupants approached them and that one of the people inside tried to grab them. Each of the children was able to escape and call for help.

Authorities identified four suspects to be involved and interviewed several subjects. But they say there’s not enough evidence that could be used to successfully prosecute the suspects.