A Waterloo man is in custody this morning in connection with what police were calling a “suspicious death.” Twenty-one-year old Montez Tyrone Caples of Waterloo was arrested on Thursday night and has been charged with first-degree murder in the death of 34 year-old Robert John Shannon of Parkersburg.

Shannon was found slumped over the steering wheel of a running car at the intersection of Whittier and Poplar Avenues on Wednesday afternoon. His death was originally deemed “suspicious,” but autopsy results show that he died of a gunshot wound to the back of the head.

Caples is being held in the Black Hawk County Jail without bond. He’ll make his initial court appearance this morning.

By Jesse Gavin, KCNZ, Cedar Falls