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CHICAGO — One person is in custody after the fatal shooting of a teen anti-violence activist on the city’s South Side.

Delmonte Johnson, 19, was killed in a drive-by shooting around 7:30 p.m. Wednesday in the 8600 block of South Euclid Avenue. He was hit in the chest and stomach and was rushed to the University of Chicago Medical Center where he died.

Johnson was an activist with the group “Good Kids Mad City,” who worked with stem the tide of gun violence on the South and West Sides.

The young activist had taken part in rapper Vic Mensa’s shoe giveaway in West Englewood on Aug. 26.

On Thursday, David Hogg, a survivor of the Parkland school shooting, tweeted about the teen’s death, saying, “…together, we will end this.”

This is a developing story. Check back for details.