NEW ALBANY, Ind. (WHAS11) -- Tuesday, WHAS11 learned police in New Albany are searching a new area in connection with the William Clyde Gibson investigation.
"It's been off and on. I've seen them here, I'm gonna guess four or five times," Jerry Roberson, who works daily at the New Albany business park at the center of the latest evidence search, said.
Roberson said he's seen multiple police officers in the woods at the end of Northgate Boulevard in recent days.
The road ends with a gated, restricted access gravel road leading to a sewage lift station. It is located about eight-tenths of a mile from Gibson's home.
"I noticed, I think it was last week, police officers and a dog back there walking around," Roberson said.
"Yesterday on, I think, two occasions, I saw some police cars and heavy trucks," an employee of another nearby business said.
Police are searching for additional evidence in the case, or cases, against Gibson, who is a suspected serial killer.
"It's off the beaten path. Nobody would see you. They wouldn't think anything," Roberson said of the latest search site.
"I hope they find it, whatever it is," a neighbor said describing the search.
Gibson is charged with killing Christine Whitis, his late mother's best friend, and Karen Hodella, a woman he met in a bar more than ten years ago.
He's also the suspect in the death of Stephanie Kirk, whose body was found buried in Gibson's yard.
So far, police have searched his property, a site near Utica, the Ohio River and the latest site for more evidence. The investigation is said to span an 800 mile area.
"I think they're gonna find more. I think they'll find several more people," Roberson said.