As revealed near the end of The Walking Dead season 8’s midseason finale, Carl Grimes has been bitten by a walker, and it didn’t take long for showrunner Scott Gimple to confirm on Talking Dead that Carl will die from his wound.
Leaving Walking Dead wasn’t my decision.
Riggs says he was informed of Carl’s death during production of season 8, episode 6, entitled ‘The King, the Widow, and Rick.’