Four teens arrested in Cedar Falls mailbox bombing

Authorities say four teens have been arrested in a mailbox bombing that damaged several homes in Cedar Falls.

Police say the homemade bomb exploded late Saturday. No one was injured but shrapnel damaged five homes. Some cars parked nearby also were damaged.

Police say 18-year-old Brenton Pierce, of Cedar Falls, was arrested for second-degree arson and first-degree criminal mischief. Zachary Verbeck and Jordan Sankey, both 18 and from Cedar Falls, were arrested for second-degree arson, first-degree criminal mischief and threats to commit arson.

A 17-year-old from La Porte City was taken into custody. The Associated Press doesn't name juveniles charged in a crime.

A message to the Cedar Falls police department was not immediately returned. It was not immediately known if any of the four had an attorney.