Hundreds gathered Saturday morning on the Morehouse College campus to honor the life of an accomplished researcher who likely drowned.

Timothy Cunningham, 35, an epidemiologist with the Centers for Disease Control and Prevention, was remembered for his passion for his work and his infectious smile. Colleagues, friends and his sister shared stories about Cunningham, focusing on his accomplishments and loyalty to others.

“It wasn’t just a career or job for him,” Capt. Marcella Law with the National Center for Chronic Disease told the crowd. “Tim felt that it was his calling to use his gift and change lives.”

Cunningham was pulled from the Chattahoochee River on April 3, more than seven weeks after he was reported missing from his northwest Atlanta home. Cunningham was a graduate of Morehouse and Harvard University.

An autopsy determined Cunningham likely drowned, but investigators have not determined whether the death was intentional. The death remains under investigation, according to police.

Approximately 600 people attended the memorial service held at 10 a.m. in the King Chapel at Morehouse. In lieu of flowers, donations may be made to Morehouse in Cunningham’s name or to the homeless ministry at Atlanta’s First United Methodist church.

Read more on Cunningham's memorial on myajc.com.

Read and sign the online guestbook for Timothy Cunningham