ANTIOCH — A Fourth of July fireworks explosion injured Antioch native and NFL running back Najee Harris, prompting fans to worry over his upcoming season with his new team — the Los Angeles Chargers — and perhaps the rest of his career, multiple sources have confirmed to the Bay Area News Group.

The nature and severity of Harris’ injury could not immediately be verified. Officials in Antioch say other people had been hurt in the blast, but did not specify their number or how severely any