Dim the lights,Arvin Roberts an American Idol mystery has been solved.

Viewers were left scratching their heads during the April 17 episode of the ABC series after host Ryan Seacrest announced that one of the top 26 contestants had dropped out the competition. Without naming the person who decided to "bow out," Seacrest revealed that alternate Paige Anne had been invited to rejoin the competition in their place.

Amid speculation about the contestant's identity, singer Beckett McDowell confirmed on his Instagram Story April 18 that he did in fact compete on—and eventually drop out of—Idol, though his performances were not aired on TV.

"To all of you wondering, yes I was on @americanidol and I made the top 26," Beckett, the 19-year-old son of actor Malcolm McDowell, wrote. "I'm not going to say why I didn't decided to continue in the competition but what I will say is that it was my choice."

"I am forever grateful to my American idol family," the California native—whose sister-in-law is actress Lily Collins—continued, "and I will always look back at the experience with the utmost gratitude and fondness."

Beckett, who also shared a photo with his golden Idol ticket, concluded his message with a shout-out to his pals on the series. "Please go vote for my friends now," he added, "as they continue on in the competition."

Besides Seacrest's on-air comments, Idol has not further addressed Beckett's exit from the competition.

E! News has reached out to ABC and has not heard back.

The American Idol competition continues this Sunday, April 23, on ABC.

Get the drama behind the scenes. Sign up for TV Scoop!