Michael Caulder, 60, of Strafford, was found dead on Nov. 14 by his wife, lawyer Wendy Bookler. He had been shot once in the head.
No weapon was found.
Given the autopsy results and circumstantial evidence, the Chester County coroner ruled out a suicide.
"There is no evidence to even suggest that this unfortunate death is related to an accident or suicide," Dr. Robert Satriale said in a statement.
No charges have been filed in the case, which is being investigated by Tredyffrin Township police, county detectives and others. Township police declined further comment on Thursday.
Caulder managed facilities at the Mandell Education Campus in Melrose Park as a consultant, according to officials of the Jewish Federation of Greater Philadelphia.
Bookler, who specializes in real estate at the Blank Rome law firm, did not immediately return a message left at her office Thursday.
