Correction: An earlier version of this story had an incorrect spelling of the victim’s last name. His name was Prince Okorie. This version has been corrected.

Editor’s note: A previous version of this story mispelled the name of the victim, Prince Okorie.

After two juries were unable to reach verdicts in previous trials, a D.C. Superior Court jury found a District man guilty Wednesday of first-degree murder in the 2010 shooting of a 16-year-old.

Raymond Roseboro, 22, of Northwest Washington showed little emotion as the jury returned five guilty verdicts on various charges associated with the fatal shooting of Roseboro’s friend Prince Okorie in the 800 block of Fifth Street NW on Nov. 30, 2010.

It was a challenging case for prosecutors. During the week-long trial, Assistant U.S. Attorney Stephen Gripkey never revealed a motive for Okorie’s killing. But weeks after Roseboro’s arrest, a D.C. homicide detective had testified in a preliminary court hearing that Roseboro thought Okorie was cooperating with authorities in identifying one of Roseboro’s best friends in the fatal shooting three months earlier of Catholic University student Neil Godleski. Authorities later said Okorie was not cooperating.

There was no DNA or murder weapon linking Roseboro to Okorie’s death.

Gripkey, as he did in the two mistrials, relied primarily on the testimony of one witness who identified Roseboro as the shooter. Another witness testified about seeing Roseboro and Okorie walking together minutes before the shooting. Gripkey also presented two new pieces of evidence: one witness who identified the shooter by Roseboro’s hairstyle, short dreadlocks, and another who testified to seeing the shooter run in the direction of Roseboro’s home.

Gripkey also used phone records that showed that Roseboro was, contrary to his defense, not at his mother’s house at the time of the shooting.

During a 21 / 2-hour closing argument, Gripkey highlighted his witnesses’ testimony and the phone records. He also noted that Roseboro had denied knowing Okorie well, although other witnesses said they often saw the victim and Roseboro together.

Okorie was shot three times, once in the face. “This was up close and personal. Find him guilty,” Gripkey urged the jury.

As he did in the previous trials, Roseboro’s attorney, James W. Rudasill Jr., argued that his client was not the shooter.

The jury returned a verdict in less than a day. Roseboro is scheduled to be sentenced April 10. He faces a mandatory minimum of 30 years in prison.