Media Line Entertainment announced the news via The East Light's official Twitter on July 4. 

The notice stated, "Maknae trainee Lee Woo Jin, who has been temporarily away from The East Light to participate in 'Produce 101', has finally! become an official member of The East Light. Everyone, please give great attention and love from now on."

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Lee Woo Jin was unable to participate in The East Last's promotions for ''You're My Love'' in May due to his participation in the competition program. The band will now be promoting as a group of six. A special single with Lee Woo Jin will be released on July 13. 

[NOTICE]

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TELTheEastLight