Michael Krauser was the victim of a homicide, officials say.
"I have no question. This is definitely Mr. Krauser. We know for sure," Lycoming County Coroner Charles E. Kiessling said Monday evening in announcing the results of an autopsy that took place Monday afternoon.
Kiessling added that Krauser, 47, appears to have died from multiple blunt- and sharp-force wounds.
"He definitely did not inflict those upon himself. We're looking at a homicide, certainly," Kiessling said.
Kiessling declined to comment on the types of weapon used, stating that police and the District Attorney have asked that the information not be released at this time.
Krauser's remains were found in the basement of Glenn A. Jackson's 317 S. Lincoln Ave. home in Jersey Shore last Thursday after a search by forensic investigators.
Jackson has been incarcerated in lieu of $200,000 bail on charges of abusing a corpse and tampering with evidence since then. However, in light of the autopsy results, more serious charges are expected to be filed against Jackson within the next few days.
In early February, Krauser's family and friends became suspicious after they hadn't heard from him for several days. His estranged wife, Carolyn Krauser, reported his absence to authorities on Feb. 11.
Investigators searched area hospitals and the Lycoming County prison but found no trace of the missing man, records state.
Police then traced Krauser to his friend, Jackson. Several of Jackson's neighbors came forward after he allegedly described burying and reburying Krauser's body in a 4-foot deep crawl space in his basement, records state.
Jackson also was behaving in a strange, paranoid manner in the days leading up to his arrest, according to the affidavit.
As evidence mounted, police acquired a search warrant, which was served on March 7. According to reports, police dogs hit upon human remains, which had been placed in a crawl space under Jackson's home.
Kiessling said it may be up to 12 weeks before all the samples have been tested and a full autopsy report is prepared.