The Michigan Attorney General's office charged the suspect of 21 freeway shootings along the I-96 corridor with terrorism, officials said on Thursday.
Casteel is accused of 21 shooting incidents, mostly aimed at motorists, reported throughout Oakland, Livingston, Shiawassee and Ingham Counties during the month of October. Many of the alleged shootings took place on I-96 or on nearby roads, with one man reporting an injury. State Police troopers took Casteel into custody on Nov. 5.
The 43-year-old Wixom resident also faces charges of assault with intent to murder and felony firearm, according to a release prepared by Attorney General Bill Schuette. Both the assault and terrorism charges could result in a sentence of life imprisonment if he is found guilty.
"These were acts of domestic terrorism against Michigan citizens and we are prosecuting them as such," said Schuette in the release. "I look forward to working with task force members and my colleagues from Ingham, Livingston, and Shiawassee counties to resolve this case and secure justice for the victims."
The Attorney General's Office reviewed evidence collected by the multi-jurisdictional task force formed to investigate the case, and dismissed the county-level charges levied against Casteel in order to file charges. According to the release, the AG has the right to file additional charges in the counties of Ingham and Shiawassee. Oakland County Prosecutor Jessica Cooper will handle a separate trial against Casteel; that county has filed 60 counts against Casteel at this time.
Judges in both Oakland County and Livingston County each ordered Casteel to undergo two separate competency and criminal responsibility tests to determine whether he is competent to stand trial. Casteel's family members have said that he suffers from a mental illness, according to the Detroit News.
According to the Associated Press, Casteel described himself as a geologist and soil scientist on professional websites.