ST. JOSEPH, Mo. -- Chiefs defensive tackle Dontari Poe will miss all of training camp and could miss part of the season after the Pro Bowl run-stuffer had surgery last week on his ailing back.

Poe first hurt his back during offseason workouts, but coach Andy Reid said Tuesday that he aggravated the injury training at home. Poe was diagnosed with a herniated disc and had surgery July 15, and trainer Rick Burkholder said he will be out indefinitely.

Poe is coming off his second straight Pro Bowl. The 6-foot-3, 346-pound tackle had a career-best six sacks last season while anchoring the middle of the Chiefs defensive line.

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Reid said that Jaye Howard will take over his position in training camp, though Mike DeVito and sixth-round pick Rakeem Nunez-Roches could also compete for time.