Fayetteville, N.C. — Cumberland County sheriff’s detectives are working with New Jersey law enforcement to solve the murder of Shawna D. Givens, 38, of the 1600 block of Holloman Drive in Fayetteville. She was found shot to death in her home on Wednesday around 12:30 p.m.

Police say Givens may have been dead for days before she was found. Deputies went to check on her after she did not show up for work as a medical clerk at Womack Army Medical Center in Fort Bragg.

New Jersey authorities are simultaneously investigating a murder-suicide case in which Dr. Giocondo Navek, 39, shot and killed a former coworker, Dr. Payman Houshmandpour, 32.

They say Navek approached Houshmandpour's car as he was leaving his apartment. Neighbors say they heard gunshots.

When police caught up to Navek not even a mile from the murder scene, in Voorhees, N.J., he pulled his vehicle over and shot himself.

Detectives say that Navek, who worked as a physician at Womack Army Medical Center, was Givens' boyfriend.

This past weekend the two spent the Easter holiday together and visited family, they said.

Cumberland County and New Jersey investigators are collaborating to determine whether the gun used to kill Houshmandpour was also used to kill Givens. A motive for the shootings has not been released.