A 45-year-old Pine County man arrested for allegedly mailing six envelopes with white powder and threatening letters to the county’s government center in November was charged Monday with similar crimes in the months before that incident.

Johnnie Earl Long, of Braham, created fake bombs and placed them in mailboxes and driveways, including his own, in an attempt to implicate his ex-wife and her boyfriend, according to the charges.

“This arrest was the culmination of a several month, multiagency investigation regarding the activities of Long,” the charges say.

In July, Long allegedly mailed a letter with white powder and a letter that said “U R DEAD” to the attorney who represented his ex-wife during their divorce proceedings. A few weeks later, “a device that appeared to be an explosive device was found in the driveway” near the attorney’s house. It had the attorney’s name spelled in black stickers. “Although the device appeared harmful, it was a simulated weapon of mass destruction,” the charges say.

Officers responded to Long’s residence several times in the following months after he and his neighbors reported seeing explosive devices in his driveway. Late in August, two men reported finding similar devices on their properties.

Long also allegedly faked his own kidnapping. He faces 21 felony counts for making terroristic threats and real and simulated weapons of mass destruction — plus two misdemeanor counts for falsely reporting a crime.