His great aunt Daisy Wise said she believes he was killed in a robbery. She said his shoes and cellphone were missing.
"That’s petty for someone to lose their life over something like that," Wise said. "Whatever it may be, nobody has a right to take nobody’s life.”
Clark went to Raines High School, according to a Facebook page his family said belonged to him.
According to the Jacksonville Sheriff's Office crime map, there have been 11 assaults and one robbery within a half-mile radius of Ken Knight Drive and Moncrief Road in the past four weeks.
The Sheriff’s Office said officers have no information about a suspect at this time.
Officers are asking anyone with information about Clark's death to call 904-630-0500 or email JSOCrimeTips@JaxSheriff.org.