In chilling confession, man says he felt 'euphoric' after killing grandfather, homeless man

STOCKTON, California -- A California man accused of killing his grandfather confessed to the homicide and the slaying of another man during an interview with KTXL.

FOX40 sat down with 25-year-old Richard Robinson 24 hours after his arrest in the double-murder investigation. Robinson's reason for the murders was simple: "Just 'cause I wanted to."

He even said he felt "euphoric" after stabbing the men.

Officials with the Stockton Police Department said Robinson stabbed his grandpa, Kirby Robinson, to death at his home on Thursday, April 14th. Robinson said he went to the house to steal, and  said the attack wasn't planned.

He showed no remorse and didn't deny the killing. In fact, he said he "had thought about stabbing someone" the day before.

Shortly after killing his grandfather, Robinson said he drove to Sacramento and stopped at a Denny's to eat.

That's where Sacramento County Sheriff's detectives said he fatally stabbed a 44-year-old homeless man, a murder Robinson also confessed to.

Deputies arrested Robinson nearby.

They said his clothes were stained with blood, and the truck Robinson drove to Sacramento helped them connect the Robinson to the Stockton murder.

"They began to run records checks on vehicles. They found one was wanted out of Stockton PD for a homicide that occurred in that same day," said Sergeant Tony Turnbull with the Sacramento County Sheriff's Department.

Robinson said he has a history of mental illness.

He told FOX40 he was not taking any medication and was not high during the incidents, but admits he was using drugs recently.

Robinson faces one murder charge in Sacramento, and charges for Kirby's death will be filed by the San Joaquin County DAs Office.