HOMESTEAD, Pa. -- Paranormal investigators say the Homestead Police Department is full of things that go bump in the night.

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People working in the building tell chilling tales -- everything from the feeling of being watched to machines turning themselves on. Members of the department said they've seen and heard strange things for quite awhile.

"Until recently, some of the newer guys started talking about it and decided to get online and contact the local paranormal group," Police Chief Jeffrey DeSimone said Thursday.

The Greater Pittsburgh Paranormal Society has audio recordings of a voice in the building saying "Hey, Sam" that wasn't caused by anyone taking part in the investigation.

Video footage of a shadow moving from left to right at a window with nobody around -- as well as a cord falling down after having been taped to the ceiling of an empty room, like someone had yanked on it -- provide more proof that something strange is going on, according to the investigators.

"My clerk, Vicci (Kenna) -- she's definitely afraid of going downstairs by herself," DeSimone said. "She needs an escort."

"It's making me crazy," Kenna said. "I'm terribly frightened."

Some have gotten used to the noises.

"The door closes, we hear the footsteps. It's almost daily that we hear that," Denise Kelly said.

Others aren't taking any chances.

"I started locking doors -- as if no one's going to come through a locked door," Kenna said. "But I feel better with a locked door."

The chief isn't sure what to think about all of the weirdness in his building.

"Some of it, I'm still skeptical of. Some of it, I don't know," DeSimone said. "The voices are clear. You can hear them."

Members of the paranormal society said Homestead is their first investigation in a year that has uncovered possible evidence of a haunting.