OTTAWA COUNTY, Mich. (NEWSCHANNEL 3) - Detectives in Ottawa County are continuing to look for a killer, and on Thursday announced a bigger reward for finding that person.

They want to solve the homicide of Janna Kelly, and now have $50,000 to put up for information leading to an arrest.

Kelly was last seen on December 4^th, 2007. Her purse and wallet turned up the next day in Grand Rapids, her car the day after that.

Investigators found her body in a wooded area near Grand Haven in March.

Folks are asked to call the Ottawa County Sheriff's Department at 616-738-4687, the Grand Rapids Police Department at 616-456-3604 or Silent Observer at 1-800-825-0221 if they have any information that can help.