The man who police say has shot and killed a doctor outside a medical center near Elm Road and the U.S. 20 bypass in St. Joseph County committed suicide after taking off from the scene.

Dr. Todd Graham was shot about 1 p.m. on Wednesday, July 26, in a parking lot outside the St. Joseph Rehabilitation Institute in Mishawaka.

RELATED: Fatal shooting reported at St. Joseph Regional Medical Center on Elm Road in Mishawaka

The suspect was found dead a few hours later outside of a friend’s home near Dragoon and Valley Trails in Mishawaka.

Investigators say Graham and the suspect had some sort of disagreement earlier in the day. After the shooting, the medical center was placed on lockdown.

The Rehabilitation Institute will be closed on Thursday, July 27, to allow workers to mourn Graham’s death. Counseling will be provided for employees in need.

A prayer service is set for noon, today, at 12 p.m. in the chapel in the Mishawaka Medical Center.

Graham was well-known throughout the medical community. Logan Community Services issued a statement expressing sadness due to his death. In the statement, they called Graham a generous supporter of Logan and a strong advocate for people with developmental disabilities, especially children with autism.

Graham also served as a consulting physician with the University of Notre Dame Athletics Department. In a statement released, the University expressed condolences, as well as prayers, for Graham’s family and friends.

The Associated Press contributed to this story.

Shocked and saddened to learn of the death of Dr. Todd Graham, a friend & supporter who did much good in South Bend. https://t.co/iwHyUD5Yq2

— Pete Buttigieg (@PeteButtigieg) July 27, 2017