Cory Monteith has voluntarily checked himself into a substance abuse treatment center, his rep announced yesterday.

As a result of the rehab stint, the actor will miss the final two episodes of Glee Season 4.

“Cory is a beloved member of the Glee family and we fully support his decision to seek treatment,” 20th Century Fox TV said in a statement. “Everyone at the show wishes him well and looks forward to his return.”

The absence of Finn will reportedly be explained in an upcoming episode.

Monteith has opened up in the past about his struggled with drugs and alcohol, telling Parade in 2011 that he's "lucky to be alive."

In a statement, meanwhile, co-star and girlfriend Lea Michele sent her "love and support" to Monteith. TV Fanatic does the same.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.