BARRON, Wis. — Authorities are hoping for as many as 2,000 volunteers to help in the search for a 13-year-old Wisconsin girl missing since her parents were killed in their home.

Investigators believe Jayme Closs was taken from her home near Barron on Oct. 15. Her parents had been shot to death.

Tips led authorities to call for another ground search on Tuesday.

Authorities are also seeking information on two vehicles that may have been traveling near the Closs family’s home on the night of the killings. One is a red or orange Dodge Challenger and the other is a black Ford Edge or black Acura MDX.

Barron County Sheriff Chris Fitzgerald called them vehicles of interest, but did not elaborate.