New Berlin police said the 10 New Berlin West High School students, who called themselves the "Bass Hunters," were found to be behind the thefts, which began in August, and seven of the stolen mailboxes were recovered, the Milwaukee Journal Sentinel reported Tuesday.
Lt. Mike Glider said the students were identified following a "good, thorough investigation by the school resource officer at New Berlin West."
"That's all we can say at this time since we are still in the process of talking to all those involved," Glider said. "We are still determining who the principal players were and who was a party to the crimes."
Police said they are still working to determine the total number of mailboxes stolen by the group.