A North Charleston man was convicted of murder and sentenced to life in prison Thursday in Charleston County, according to court records.

James R. Rose, 36, of Ladson, was charged in the shooting death of Leland M. Shannon Jr., 40, of Lincolnville.

Rose planned the execution-style killing and home invasion, according to prosecutors. He was not the triggerman, authorities said.

Two other people, who wore masks during the incident and shot Shannon, are still on the loose and have never been identified by investigators, according to prosecutors.

Rose had known Shannon since he was 15 years old and planned the killing in response to a dispute over drugs, according to 9th Circuit Asst. Solicitor Jennifer Shealy, who prosecuted the case.

Rose had been buying drugs from Shannon, who had upped the price, according to authorities. Rose found that disrespectful and indicated to a friend in the days preceding the killings that he was becoming frustrated with Shannon, prosecutors said.

On the night of the murder, he indicated to another person that he was going to get his respect back, prosecutors said.

Rose enlisted two unidentified participants to invade the home on West Carolina Avenue in Lincolnville and shoot Shannon, prosecutors said. Shannon was shot four times; once in the head, once in the neck, and once in the shoulder by a handgun. He also was shot once in the leg by a shotgun, according to prosecutors.

Rose drove the car away from the scene, entered the home and shouted orders to the two men he'd enlisted to help him, prosecutors said.

Witnesses testified they'd seen Rose at the home and testified about the earlier disagreement he'd had with Shannon.

The two triggermen put their guns to the head and chest of Shannon's 20-year-old daughter during the incident, prosecutors said.

Rose has a lengthy record including multiple drug offenses, third-degree burglary, criminal domestic violence and weapons charges, according to Shealy.

The trial began on Tuesday and the jury returned the guilty verdict on Thursday afternoon. Shannon was a son of Lincolnville Town Councilman Leland Shannon Sr.

Reach Natalie Caula Hauff at 937-5594 or Twitter.com/ncaula.