NORTH SHORES, MIch. - A $15,000 reward is now being offered in case of missing Michigan mom and gas station clerk Jessica Heeringa.
Twenty-five-year-old Heeringa went missing late Friday night while working as an Exxon mobile clerk in Norton Shores, near Muskegon.
Police are treating it as a kidnapping after finding the gas station unlocked and Heeringa's keys and purse left behind.
Police said they arrested a man in a silver minivan for questioning Wednesday evening. They have since released him because he was not a suspect, investigators said.