Autopsy results have been released in the case of a northeast Iowa teenager accused of killing his grandparents. The Delaware County Attorney says the Manchester couple found dead in their home Sunday afternoon were shot to death.

County attorney John Bernau revealed Wednesday afternoon that an autopsy shows Richard Sweet and his wife, Janet Sweet, died of gunshot wounds. Further details are not being released at this time, including the type of gun used in the killings and whether the gun was recovered.

The Sweet’s grandson, 17-year old Isaiah Sweet, is charged in their deaths and remains in custody at the Delaware County Jail. According to court documents, Sweet admitted to a female friend last Friday night that he drugged his grandparents and thought they were dead. He called her again the next morning to tell her he had killed them. Sweet allegedly admitted the killings to two others over the weekend as well.

By Jon Swisher, KMCH, Manchester

Authorities say they’ve caught the man responsible for stealing historical items from a museum in northeast Iowa. A 58-year old Waterloo man has been arrested and charged with theft for stealing some valuable artifacts from the Cedar Falls Historical Society.

David Arnold was charged with first degree theft after numerous artifacts were taken, including antique firearms, bayonets and clothing from the World War I and World War II eras. The value of the items was reported as over $13,000.

Last month, co-workers at the museum became suspicious when they saw Arnold mishandle some items at the facility. Police investigators later learned that Arnold had been keeping the stolen items at a Waterloo home, unbeknownst to the home owners.

They in turn helped police with the investigation and recovery effort. Arnold remains held in the Black Hawk County Jail.

By Jesse Gavin, KCNZ, Cedar Falls

A northeast Iowa teenager, accused in the weekend deaths of his grandparents, made his first court appearance this afternoon. Seventeen-year-old Isaiah Sweet was arrested last night in Cedar Rapids.

Reporter Mike Johnson was on hand for Sweet’s initial court appearance in Clayton County. He says Sweet was formally charged with two counts of first-degree murder and one count of operating a vehicle without the owner’s consent. An arrest warrant filed Monday in Delaware County shows Sweet admitted to three people that he killed his grandparents over the weekend.

The bodies of 62-year-old Janet Sweet and 55-year-old Richard Sweet were found Sunday afternoon in their home in Manchester by relatives who arrived for a Mother’s Day gathering. Isaiah Sweet’s court appearance took place in Clayton County because a district judge was not available today in Delaware County.

Sweet’s bond was set at $1 million cash. District Judge Monica Ackley set a preliminary hearing for May 25th in Delaware County. Sweet is being transferred to the Delaware County Jail. According to court documents, Sweet told one friend last Friday that he “drugged” his grandparents and he thought they were dead.

Authorities said autopsies were conducted Monday, but the results have not been released.

By Mike Johnson, KMCH, Manchester

Arkansas authorities say they’ve arrested a man wanted by the U.S. Marshals Service in north-central Iowa. Twenty-three-year-old David Wever of Mason City was arrested on Sunday after allegedly leading Fayetteville Arkansas police on a chase and nearly running over an officer.

Police say after Wever’s arrest they found in his truck a black cap that said “Police” on it as well as a collapsible baton and a fixed-blade knife. A spokesman for the U.S. Marshals Service says that Wever is accused of running a home-repair scam. Wever remains in the Washington County Jail having been arrested on numerous charges in Arkansas including aggravated assault and obstructing governmental relations.

By Bob Fisher, KRIB, Mason City

Isaiah Sweet

A Manchester teen, wanted for murder in the deaths of his grandparents, was apprehended in Cedar Rapids. Seventeen-year-old Isaiah Sweet was captured shortly after 7 p.m. Monday evening in the 51st Street area near a Theisen’s store.

Earlier in the day, officials issued a warrant charging Sweet as an adult with two counts of first-degree murder. Sweet is suspected in the deaths of 55-year-old Richard Sweet and his 62-year-old wife, Janet.

Their bodies were found Sunday afternoon. The Iowa Division of Criminal Investigation says autopsies were conducted, but authorities are not releasing the cause of death. According to a criminal complaint, a neighbor saw Richard Sweet alive at his home Friday night.

That evening, authorities say Isaiah Sweet called a friend and said he drugged his grandparents and said he thought they were dead. Sweet’s bond is set at one-million dollars.

By Mike Johnson, KMCH, Manchester