GRAND BLANC, Mich. Jeffrey David Cox, a Grand Blanc resident, was taken into custody Saturday after authorities claim he made threats to kill the President and to bomb several locations. I plan to assassinate the President and the Vice President. Nobody can stop me.I will kill and murder Sophia Winningham, the State of Michigan Adult Protective Services social worker.I will place a bomb in all Mott Community College campuses set to detonate on Monday, May 18, 2020. I will also go on a shooting spree and kill all of the students and staff at all of the campuses of Mott Community College sometime next week. That same day, Grand Blanc Police Department detectives, officers, and U.S. Secret Service agents executed a state search warrant at Coxs home in Grand Blanc and arrested him.