Evan Agostini / Invision/AP 1 / 7
Evan Agostini / Invision/AP 1 / 7

"Glee" star Cory Monteith has thanked fans for their support after checking out of a rehabilitation center.

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The singer/actor, who plays McKinley High graduate Finn on the musical TV show, voluntarily enrolled in a treatment program to address "substance addiction" issues.

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He took to his Twitter.com page on Friday to express his gratitude to his well-wishers, writing, "Sending out big love to everyone. Thank you for the continued support! It means the world to me!"

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Monteith's girlfriend and "Glee" co-star Lea Michele also tweeted, "Today is a great day... Love you all!"

The actor was photographed reuniting with Michele at Los Angeles International Airport, where the couple was reportedly preparing to fly out of town.