Riggs, 19, recently revealed he had landed a new role after being unemployed for nearly a year.
He did not immediately say who he would play or on what show he would appear, but this week said it would be on the ABC drama "A Million Little Things," a drama about longtime friends coping with the suicide of someone close to them.
"SUPER excited to announce that i'll be joining @AMillionABC for a couple of episodes (and maybe more??)! the cast & crew is so incredible, and i absolutely love the series," Riggs tweeted.
TVLine.com said Riggs' character will cross paths with cast member Romany Malco's character Rome.
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