A Tennessee grand jury has indicted two men in the shooting death of Chicora native Caitlyn Kaufman.

James Edward Cowan, 28, and Devaunte Louis Hill, 20, both face a single count of first-degree murder in what investigators have previously called a road rage-related shooting.

The indictment, filed Wednesday in Davidson County, Tenn., shows a grand jury found the two men “unlawfully, intentionally and with premeditation” shot and killed Kaufman, a 2012 Butler Area High School graduate.

An indictment is a formal charge of a crime. For an indictment to be issued, a grand jury finds only a probability that the defendants committed a crime, not the higher standard of proof beyond a reasonable doubt used for conviction.

In a hearing in January in a Tennessee court, a witness and investigators said Kaufman may have cut the defendants' car off in traffic as they traveled along Interstate 440 in Nashville.

Kaufman, a 26-year-old nurse, was shot and killed around 6:30 p.m. Dec. 3 while she traveled to St. Thomas West Hospital, where she worked in the intensive care unit.

Investigators said her car was struck by at least six bullets and her rear driver's side window was shot out.

A medical examiner in Nashville said she was struck by a bullet once, in the shoulder, and she likely died just minutes after being shot.

According to investigators, a police officer found Kaufman's Mazda SUV along the guardrail three hours after the shooting and discovered her body in the driver's seat.

Hill, of East Nashville, was arrested Dec. 11 and initially implicated himself in Kaufman's murder, according to authorities, but has since maintained his innocence.

Cowan was arrested Jan. 12 in the Antioch neighborhood 12 miles southeast of Nashville, authorities said, where they discovered a “substantial” number of Xanax pills and fentanyl as well as $2,100 in cash and at least one handgun.

Cowan, who is identified in the indictment as also going by the pseudonym “James Edward Lillard,” was previously convicted of aggravated robbery in 2011, and could face additional jail time if convicted because of a probation violation.

A third suspect, Dimeneshia Carter, 20, was charged with being an accessory to the murder after the fact, which police allege stems from her harboring Cowan, her boyfriend. She has not been indicted, but her case has been bound over to the grand jury.

Cowan may face additional charges related to his alleged possession of firearms and controlled substances, which were bound over to a grand jury for possible indictment.

An arraignment hearing for both defendants is scheduled for June before Judge Angelita Blackshear Dalton.