The discovery of three World War II headstones in an abandoned Nebraska house has provided a mystery for the Knoxville Police Department.

According to KETV-TV, on Tuesday police were called to an abandoned house in Omaha after several complaints of trespassers. Inside the garage, authorities discovered 13 tombstones. Three of them are believe to have a Knoxville connection.

One family has already been located. Relatives of Howard H. Biggs, who according to the tombstone was born December 23, 1913 and died on February 9, 1994, said the tombstone was never delivered. Biggs served in the US Army.

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