CONCORD, N.H. – Federal officials are trying once more to sell New Hampshire properties formerly owned by now-jailed tax militants, including a 100-acre parcel that may be booby-trapped.

The first auction 13 months ago of the properties seized by the government from Ed and Elaine Brown of Plainfield failed to field any bidders, in part because potential buyers couldn’t tour the 100-acre section. A second auction is planned for late October.

The towns of Lebanon and Plainfield, where the properties are located, are owed hundreds of thousands of dollars in back taxes and interest.

The Browns, now in their 70s, were convicted following a nine-month standoff with authorities in 2007 after they were sentenced to five years in prison for tax evasion. Both are serving sentences of more than 30 years in prison.