Dr. Elbert Goodier III

METAIRIE, Louisiana -- A man shot and killed a doctor Thursday as he treated a patient, then took his own life a short time later at a nearby Wendy's restaurant.

Dr. Elbert Goodier III, 75, a respected urologist in Metairie, was pronounced dead at his office near East Jefferson General Hospital after being shot in the head, nola.com reports.

Officials with the Jefferson Parish Sheriff's Office identified the gunman as John P. Thomas, 73, fox8live.com reports.

After shooting Goodier, Thomas ran to a nearby Wendy's. Thomas shot himself in the head as deputies began to enter the restaurant. The shootings occurred around 2:20 p.m.

"There were several (deputies) that came in with their guns drawn," a female witness inside the Wendy's tells nola.com. "As they came in, he lifted the gun to his head and shot himself."

Authorities don't know whether the gunman had any ties to the doctor or what the motive for the shooting is, nola.com reports. Jefferson Parish Coroner Dr. Gerry Cvitanovich, who knew Goodier, says the doctor was "not the kind of physician you'd expect a patient to get mad at."

"[Dr. Goodier was] a very nice guy," tells fox8live.com. "If you called him late at night, he was always prepared to help assist and take care of his patients."

Goodier is survived by his wife Catherine Goodier, his son, Michael Goodier and his two daughters, Christine Ross and Gina Goodier.