OKLAHOMA CITY - Investigators with the Oklahoma County DA's office are searching for a material witness in a 2012 murder case, who refuses to testify in the upcoming trial.

“In the dealings I've had with him he's been a good kid,” said Michael Trevino, who represents 21-year-old Gregory Martin.

Trevino says Martin is a key witness in the state's case against Deante Hawthorne. Hawthorne is currently in jail, facing a first-degree murder charge for shooting and killing 16-year-old Khaleeq Landon in the parking lot of the Windsor Village apartments back on June 14, 2012.

Several witnesses have been called to testify, including Martin, who is said to have been at the scene - and saw the shooting take place.

“I suspect that he's scared, but that's not what he said to me,” said Trevino.

Trevino says Martin originally agreed to testify against Hawthorne, in order to stay out of custody while he served a 6-month boot camp on another case he was involved in. But now he's refusing to do so.

“Most defendants do look for any and every way to get out of jail,” said Trevino. “And now when it gets down to it, he's not really following through on his deal.”

Trevino says that decision could really hurt his client in the long run. Not just in the murder case, but in his case as well.

“He's on the hook for about 11 years,” said Trevino. “That he could spend when if he'd just do what he agreed to he would be on probation.”

Trevino says should Martin be found, he will be hauled in front of a judge, and then could be hauled off to jail, where he would stay until the murder trial in January. Trevino says that may be the only way to make sure Martin will testify against Deante Hawthorne.

“Right now his word is not really worth a whole lot,” said Trevino.

Trevino says he hopes Martin is watching this broadcast and calls him so he can surrender him to authorities and keep him out of jail and out of trouble until the trial.

If Martin is found by police before he surrenders, he would be held in jail on a $50,000 bond.