A 41-year-old man has been arrested for plotting to kill United States President Barack Obama. James Vernon McVay, a homicide suspect accused of killing a 75-year-old woman was arrested near Madison on Saturday.

McVay who is facing first-degree murder and burglary charges, entered the home of Maybelle Schein in South Dakota, fatally stabbed her and then fled in her vehicle, reports said.

According to The Argus Leader in South Dakota, police said they alerted Dane County law enforcement about McVay being in Dane County because of the vehicle's OnStar system. The police said McVay was caught in the homicide victim's stolen vehicle.

The Argus Leader reported the homicide suspect allegedly told authorities that he "killed an old lady" and wanted to go to Washington to kill the president. "He's being held here in jail," Lieutenant Porter of the Dane County's Sheriff's Office in Madison, Wisconsin told PTI on Thursday.

In Wisconsin, McVay has been charged with additional charges like possession of drug paraphernalia, knowingly fleeing away from a police officer, operating a motor vehicle without owner's consent and driving a vehicle while intoxicated.

"We're waiting for him to be extradited to Sioux Falls in South Dakota till all the paperwork is completed," Porter added.