COLUMBUS, Ohio (AP) - Federal prosecutors say two former members of an Ohio militia group have pleaded guilty to charges related to bomb making.

Court records show that 37-year-old Ryan King, of Franklin, and 53-year-old Randy Goodman, of Ripley, pleaded guilty Thursday to conspiring to possess explosive devices.

They face a maximum sentence of five years in prison

King's attorney declined to comment. Goodman's attorney, Jay Clark, says the defendants were "doomsday preppers" interested in protecting their property with no malicious intent. He called the explosive devices essentially "a big firecracker."

Prosecutors say the men tested their "crater makers" in January at Goodman's home in southern Ohio and discussed what methods would be most lethal.

Investigators say King and Goodman also talked about bomb making and ignition methods in detail.

Copyright 2019 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.