More details are unfolding about the man that police took into custody Monday under the suspicion that he was the person responsible for the I-96 shootings. 43-year-old Raulie Casteel was to be arraigned Wednesday in Howell. He's suspected of 24 shootings in four counties, and injuring one person.Casteel seemed to be quite active on Twitter, at least until recently. His last tweet is one in which he endorsed Republican Senate candidate Pete Hoekstra. His Twitter account has offered some insight into his psyche, as well.

He was rather outspoken about his dislike for President Barack Obama, and tweeted several times about wanting him impeached.

According to WOOD-TV8, Casteel's mother told the Detroit Free Press that she fears that he son is mentally ill, but refuses to seek treatment.