Backstreet Boys' AJ McLean Checks Into Rehab

NEW YORK (CBS/AP) Backstreet Boys singer AJ McLean has checked himself into rehab.

McLean confirmed in a statement Thursday that he entered a rehab clinic for "personal reasons."

PICTURES: Stars in Rehab
PICTURES: Backstreet Boys

"For personal reasons, I've checked myself into a rehab clinic," he said. "With 2011 being a busy year for Backstreet, I want to be healthy and perform and sing for people at my very best and happiest. None of this will affect our current tour plans and I look forward to seeing everyone really soon! Thank you for all of your support and respecting my family and friends privacy during this time."

The 33-year-old also posted messages on Twitter referring to his decision to enter rehab.

"Its gonna be a great year! I love u all and wish me luck! I start my sober journey tomm!" he wrote on Sunday.

On Monday, he said goodbye to his followers: "See u on the other side!"

This will be McLean's third stint in rehab. He sought treatment in 2001 and 2002 for issues including depression and alcohol abuse, People magazine reports.

The Backstreet Boys are going on tour with the New Kids on the Block this summer.