State police and other investigators spent Tuesday and part of Monday evening searching an unoccupied home in the Halifax area as a part of a cold-case investigation.

Media reports say that the search was tied to unsolved disappearance 30 years ago of 17-year-old Tracy Kroh, of Millersburg. The search led police to shut down Mountain House Road for several hours Tuesday.

Trooper Megan Frazer said police were following up on a tip on a cold case. It is an active investigation and she said she could not provide any more information.

The home’s caretaker, Ian Benoit, was at the scene while investigators were on the premises and after. Benoit said he is at the house about once a week, to work on the property’s landscaping.

Benoit said he came out to the property Monday night, then again around 8 a.m. Tuesday, and helped police tour the property. He said investigators never mentioned the Kroh case to him, but he did tell them about several recent break-ins at the property.

Benoit said the police focused their search on two sheds, including one that appears charred on the inside.

Benoit said the homeowners, the Warfel family, haven’t lived in the property as their main home for years. Benoit said he hasn’t even come up to the property in the last two years. Benoit said he wasn’t sure of a time when the home was regularly occupied by the homeowner, as it was a second residence.

Benoit, who has lived up the street for the past 10 years or so, said the area is normally pretty quiet. Mountain House Road can be busy, but otherwise there are only a few homes in the area. Outside of the closest neighbors, he doesn’t think most people would know the house was vacant.

Dauphin County District Attorney Fran Chardo was on the scene earlier Tuesday, but was unable to comment.

In May, Chardo confirmed tips led authorities to search another area in northern Dauphin County to find evidence connected to Kroh’s disappearance.

The 17-year-old was last seen on August 5, 1989, at the Alex Acres Trailer Park off Route 147 near Halifax.

She went there to drop off some items for relatives around 10 p.m., but never returned to her Millersburg home. Her car was found the next day in the Millersburg town square.

Authorities have been treating the case as a homicide, though it is still classified as a missing person’s case, Frazer has said previously.