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NORTON SHORES, Mich. (WZZM) -- Police looking for Jessica Heeringa had a promising lead but it wound up leading nowhere. Now six days after she disappeared, investigators say they are no closer to finding the missing 25-year-old mother.

Tuesday afternoon, Norton Shores Police received a tip of gunfire in P.J. Hoffmaster State Park Saturday morning. The park is about four miles from the Exxon station where police believe Heeringa was abducted.

Police Chief Daniel Shaw told WZZM 13 while he believed the tip was credible, he also knew Saturday was opening day of turkey hunting season and hunting is allowed in the southern portion of Norton Shores. While there was no information connecting the gunshots to the Heeringa case, police still organized an aerial and ground search of the park around 5 p.m.

During the search, a Hoffmaster visitor provided wire rimmed glasses he says he found Wednesday evening while walking in the park. The glasses resembled a pair Jessica wore, but family members soon told WZZM 13 the did not believe the glasses were Jessica's.

Thursday evening Norton Shores Police confirmed the glasses did not belong to Jessica. The search of Hoffmaster State Park was called off around 8 p.m. with no signs of her.