GREEN BAY, Wis. (AP) – Brown County authorities have announced a break in a cold-case homicide, charging an Oconto Falls man in the death of a teenager 15 years ago.   Green Bay police announced charges Friday against 52-year-old Peter Hanson. Investigators say at least one other person may have been involved.        He’s accused in the death of 19-year-old Chad McLean of Green Bay, who disappeared in 1998 after a night of partying. His body was found a month later beneath a bridge.   A WLUK-TV report (http://bit.ly/14cfQLy ) says Hanson has been in the Oconto County Jail since November on unrelated charges. He’s expected to make an initial appearance next week on a charge of being party to first-degree intentional homicide.  Defense attorney John Wallace says it’s too early to comment on the case.

—      Information from: WLUK-TV, http://www.fox11online.com