DETROIT — Nine alleged members of a Christian militia group that was girding for battle with the Antichrist were charged Monday with plotting to kill a police officer and slaughter scores more by bombing the funeral — all in hopes of touching off an uprising against the U. S. government.

Eight men and one woman believed to be part of the Michigan-based Hutaree were arrested over the weekend and on Monday in raids in Michigan, Indiana and Ohio.

FBI agents moved quickly against Hutaree because its members were planning an attack sometime in April, prosecutors said. Authorities seized guns in the raids but would not say whether they found any explosives.

The arrests have dealt “a severe blow to a dangerous organization that today stands accused of conspiring to levy war against the United States,” U. S. Attorney General Eric Holder said.

Authorities said the arrests underscored the dangers of homegrown right-wing extremism of the sort seen in the 1995 Oklahoma City bombing that killed 168 people.

In an indictment unsealed Monday, prosecutors said the group began military-style training in the Michigan woods in 2008, learning how to shoot guns and make bombs.

David B. Stone Sr., 45, of Clayton, Mich., and one of his sons were identified as the ringleaders of the group. Stone, known as “Captain Hutaree,” organized the group in paramilitary fashion, and members were assigned secret names, prosecutors said.

“It started out as a Christian thing,” Stone’s ex-wife, Donna Stone, told the Associated Press. “You go to church. You pray. You take care of your family. I think David started to take it a little too far.”

Donna Stone said her ex-husband pulled her son into the movement.

Another of David Stone’s sons was arrested Monday night at home about 30 miles from the site of a weekend raid. Joshua M. Stone surrendered about 8 p. m., said Andrew Arena, head of the FBI’s field office in Detroit.

Prosecutors said David Stone had identified certain law enforcement officers near his home as potential targets. He and other members discussed setting off bombs at a police funeral, using a fake 911 call to lure an officer to his death, killing an officer after a traffic stop or attacking the family of an officer, the indictment said.

After such attacks, the group allegedly planned to retreat to “rally points” protected by trip-wired explosives for a violent standoff with authorities.

“It is believed by the Hutaree that this engagement would then serve as a catalyst for a more widespread uprising against the government,” the indictment said.

The charges against the group include seditious conspiracy — plotting to levy war against the United States — possessing a firearm during a crime of violence, teaching the use of explosives and attempting to use a weapon of mass destruction — homemade bombs. The defendants were jailed; bail hearings are Wednesday.

Those charged in the alleged plot are Stone Sr., 45; his son, Joshua M. Stone, 21; his wife, Tina Stone, 44, all of Clayton, Mich.; and his other son, David B. Stone Jr., 19, of Adrian, Mich.

Also charged were Joshua Clough, 28, of Blissfield, Mich.; Michael Meeks, 40, of Manchester, Mich.; Kristopher Sickles, 27, of Sandusky, Ohio; Jacob Ward, 33, of Huron, Ohio; and Thomas Piatek, 46, of Whiting, Ind.

Hutaree says on its Web site its name means “Christian warrior” and describes the word as part of a secret language that few are privileged to know. The group quotes Bible passages and declares: “We believe that one day, as prophecy says, there will be an Antichrist. . . . Jesus wanted us to be ready to defend ourselves using the sword and stay alive using equipment.”

The nature of the organization’s alleged grudge against law enforcement and the government was unclear.