A reward is increasing to $25,000 for information about the 2013 disappearance of a mother from her job at a western Michigan gas station.
The Muskegon Chronicle reports Great Lakes Ford of Muskegon donated $4,000 through the Silent Observer program, helping to boost the "Reward for Jessica" fund.
Police say efforts to find Jessica Heeringa continue. She disappeared April 26, 2013, before she was set to close the station in Norton Shores. Police say there was no indication of a robbery. Investigators have said a small amount of blood found outside the station belonged to her.
Heeringa, who has a young son, was 25 years old at the time of the disappearance. The gas station had no security cameras, leaving authorities with fewer clues.