Now that we know the door hangers are not part of a scam, we are publishing this amended story. More from CBS News. Chicago police warn of cellphone thieves at Sox-35th Red Line station.

Last week, 11Alive showed video of what appeared to be Peterson taking one of Harris' door hangers and replacing it with her own about an hour after he left one there.

Almost exactly an hour later at 7:18 p.m., his opponent Christina Peterson went up to the same house, attached her own door hanger, and is seen on camera making a yanking motion before running ...

GRAND RAPIDS -- Hoping to dredge up new information about cold cases, Grand Rapids Police have started a new "door hanger" program to remind residents of unsolved homicides in their neighborhood.