NAMPA, Idaho — A Nampa man is behind bars after police say he sparked a bomb scare in a Nampa neighborhood Thursday.
Grant Charles Stevenson, 22, was arrested Thursday night and faces a felony charge of terrorism and misdemeanor second-degree stalking.
Police began investigating after receiving a message over social media at 4:14 p.m. about a bomb in the area of 1700 South Juniper Street, near Nampa's Liberty Park. According to police, the bomb threat also involved the threat of a possible chemical warfare agent.
Officers with the FBI, ATF, Nampa Police and Idaho State Police responded, along with Region 3 HazMat and the 101st Civil Support Team Idaho National Guard.
Police said the bomb threat was "unsubstantiated," but asked residents in the area to shelter in place while the investigation unfolded. No one was made to evacuate.
Investigators searched the area for any traces of explosives, and conducted interviews, ultimately zeroing in on Stevenson. He was arrested and booked into the Canyon County Jail.
Officials never found any suspicious devices or substances, and it's unclear whether Stevenson actually had access to bomb-making materials.
A motive in the bomb threat has not been made public.
Court records indicate that Stevenson does not have any felony criminal history in Idaho, but received a withheld judgment in January after pleading guilty to misdemeanor domestic assault.
A terrorism conviction carries a possible life sentence. Stevenson is expected to appear in court Friday afternoon.