Police in central Oklahoma said Thursday that they charged a suspect with homicide after finding a man with his head "almost entirely severed from his body."

Isaiah Marin, 21, was charged in the murder of Jacob Andrew Crocket, Fox-25 Oklahoma City reported. Police had no motive, but said Marin, who lives in Stillwater, confessed to the killing and told them he planned to commit murders one at a time.

Police were reportedly informed about the killing when Marin called them around 2:45 p.m. The report said when officers arrived, they found Marin jogging with a long knife covered in blood.

Reports of the Oklahoma beheading came one day after a man with a history of psychiatric problems beheaded his mother in her Long Island, N.Y., apartment and dragged the body and head out onto a street, where onlookers initially thought they were witnessing a macabre Halloween prank, police and witnesses said.

Oklahoma police said the beheading victim is the son is a highway patrol trooper, but that does not appear to be a motive.