HOWELL, Mich. -

The suspect in the Michigan roadway shootings will be charged Wednesday in Livingston County.

An exact list of charges or arraignment time had not yet been released. The other counties where the crimes were committed are also expected to bring charges later this week.

The man, 43-year-old Raulie Casteel, remains in custody at the Oakland County Jail.

Suspect has political presence online

Local 4 has uncovered that the suspect is very open about his political views and publicly speaks his mind. He has a profile on the Tea Party-backed website FreedomConnector.com and a Twitter profile.

He’s tweeted, "I want the arrest and impeachment of Barack Obama. I've given the military the option of marching him out the W.H. in handcuffs.”

He went on to add that if Mitt Romney had won the presidency, he wanted him to arrest President Obama.

Referring to the state of the economy, he also tweeted, "Yes, you heard me! We're returning businesses to their rightful owners - the American people!”

But sources tell Local 4 the suspect isn’t talking to authorities. One detective compared trying to talk to him was like talking to a brick wall.

Roadway shootings stretch across four counties

The shootings began Oct. 16 and stretched from Oakland County west to Ingham County. The targets mostly were cars traveling on roads near Interstate 96. Only a handful of shootings actually occurred on the interstate.

Police had said they were looking for a man in his late 20s or early 30s driving a dark car. They put out a sketch of him.

Police have urged people to stick to their routines, but the shootings caused some anxious drivers to avoid their usual routes. Authorities said they have received 2,800 tips in their hunt for the gunman, and a $102,000 reward is being offered for information.

More: FBI, ATF boost Michigan roadway shootings reward to $102,000

Nearly half the shootings were in Wixom in Oakland County. On Oct. 27, a man driving to Detroit for the World Series was shot in the hip on I-96 in Livingston County. And police increased patrols for fans attending Saturday's Michigan State football game.