MOUNT VERNON, Ohio — A sheriff in central Ohio says a tarp and trash bags were taken from the home of a 13-year-old girl who was found bound and gagged in the basement of a man’s home about 10 miles away.

The girl had disappeared Wednesday along with her mother, brother and the mother’s friend. Authorities say she was found Sunday in the Mount Vernon home of Matthew J. Hoffman, who is being held on $1 million bond on a kidnapping charge. The other three remain missing.

Knox County Sheriff David Barber said Tuesday that the items found in the girl’s home in Howard are significant to the investigation. He also says a Wal-Mart receipt listing tarps and trash bags has been found, but would not say where or when.

Barber says Hoffman is on suicide watch after giving certain “indications” to staff.