Norman Reedus, one of the big attractions for this year's Comic Con, sent a tweet: "Rhode Island I'm sorry we're in the finale here in GA filming and I apologize for not being there was looking forward to seeing u guys."

PROVIDENCE, R.I. -- Norman Reedus, who plays Daryl on "The Walking Dead," along with cast members Tom Payne (Jesus), Lennie James (Morgan) and Khary Payton (King Ezekiel) will not be coming to Rhode Island Comic Con this weekend.

Susan Soares, spokesperson for Comic Con, said the convention learned this morning that AMC, the cable network that airs "The Walking Dead" was refusing to allow the actors to leave the show's set in Georgia because of last-minute changes to the shooting schedule.

Reedus, one of the big attractions for this year's Comic Con, sent a tweet: "Rhode Island I'm sorry we're in the finale here in GA filming and I apologize for not being there was looking forward to seeing u guys."

Soares said anyone who had paid for autographs or photo opportunities with the absent "The Walking Dead" cast members will have their money refunded. There will be no refunds for admissions to Comic Con.