NORTON SHORES, MICH. - Police spent the day looking for new evidence in the case of accused killer Jeffrey Willis.
Early Thursday morning detectives returned to the home of Willis's grandfather. The home is on Bailey Street near the Getty Four Drive-in.
Jeffrey Willis remains at the Muskegon County Jail.
He last appeared in court in July. Prosecutors asked a judge for permission to use evidence from the alleged attempted abduction of a 16-year-old girl at the murder trial for Rebekah Bletsch.
The judge has not ruled on the request. And the court has not set a date for the murder trial.
Thursday's search of the home that once belonged to Willis' grandfather is proof the investigation into Willis is still active.
Norton Shores Police Chief John Gale released a statement saying "we continue on a daily basis working the Willis case for any possible connections to the Heeringa investigation."
Muskegon County's prosecutor D.J. Hilson added that detectives used different forensic techniques that had not been used at the Bailey home when it was searched in May.
Police arrived before 5 a.m. Thursday.
They spent a few hours searching the basement, main floor, second story, and backyard.
Loud noises from inside the home sounded like walls were being struck with a hammer or another type of tool.
Police believe Willis spent time at this home around the time when Jessica Heeringa was last seen. Willis is a "person of interest" in the investigation into the disappearance of Heeringa.
Detectives cleared the scene on Bailey Road shortly after noon. They did not say if they found anything of potential importance to the Willis investigation at the home.
Last week Kevin Bluhm, the cousin of Willis, entered guilty pleas to two charges of lying to police.
He first told investigators "Jeffery Willis did do it" in reference to killing Jessica and that "he" helped take care of her body.
Then he told police he made the story up.
Bluhm will be sentenced later this month.
(© 2016 WZZM)