CLEVELAND -- Newly released 911 calls reveal the first moments after an off-duty Cleveland firefighter was shot in the driveway of his home on Lampson Road Sunday night.

"My husband's been shot!"

The frantic wife of Lt. William Walker is heard on dispatch recordings, followed by the voice of the dispatcher, who is uncertain about whether she's calling from Cleveland, or East Cleveland. Precious seconds pass as Walker's wife is transferred to a Cleveland dispatcher.

15 seconds earlier, the first 911 call was made by neighbor Francis Russell.

"I heard 5 gunshots," said Russell to the dispatcher. Her view of the crime scene is only a few feet away from her window, however, she did not see any suspects, or a getaway vehicle.

About a minute and a half later, two more neighbors call 911. Just like Russell, both heard gunshots and screaming, but neither witnessed the shooting.

The Cuyahoga County Medical Examiner on Tuesday released the cause of death: Multiple gunshot wounds to the upper extremities and torso.

Police say around 8:30 Sunday night, Walker was walking toward his home after parking his car in his driveway, when he was shot several times. Family members say they heard shouting before the gunfire.

45-year old Walker was a 15-year veteran of the Cleveland Fire Department, and a well-respected mentor and EMS trainer. He was recently promoted to lieutenant in August.

Walker also recently remarried in July, and was in the process of moving to the quiet country in Lake County. He leaves behind a wife and 2 children.

A vigil is planned outside of his home on Thursday at 6pm. Many of his firefighter colleagues are expected to attend.