MCCLAIN COUNTY, Okla. -- Cody Sweetman's grandmother refused to comment on the 18-year-old's murder-for-hire charge on Wednesday.
"I don't want to talk to anyone about this. It's none of your business, it's none of my business. And I'm not hateful, I just don't want to talk to anybody," she said.
But OSBI investigators did want to talk.
They said Sweetman tried to hire a hit man to kill his ex-girlfriend and her new boyfriend.
Investigators said Sweetman first hatched the plan while in jail and offered a fellow inmate $1,000 to kill the new boyfriend.
That inmate turned informant and worked with OSBI to set up a sting.
From there, Sweetman's plan expanded and the payout on this hit rose to $1,500.
"He wanted actually the two killed at the same time but the ex-girlfriend shot in the head first so that the male victim could see that and then understand the same pain that the suspect was going through," OSBI's Jessica Brown said.
OSBI officers said the sting went down at the Sooner Mall Tuesday.
There, officers exchanged money with Sweetman and promised to deliver proof of the double murder Wednesday morning at a Love's Truck Stop near the Riverwind Casino.
They arrested him when Sweetman showed up to collect the proof.
"Thankfully, the person that the suspect made contact with inside the McClain County Jail had the wherewithal and took this seriously enough to go the McClain County Sheriff's Office and report that. And thankfully the McClain County Sheriff's Office decided to call in OSBI," Brown said.
Brown also said Sweetman told investigators he had planned to join the military.
He is in the McClain County Jail awaiting his first court date.