Van Halen guitarist Eddie Van Halen has entered a rehabilitation facility for undisclosed reasons, casting further doubt over the band's intended summer reunion tour with David Lee Roth, which deraile

Van Halen guitarist Eddie Van Halen has entered a rehabilitation facility for undisclosed reasons, casting further doubt over the band's intended summer reunion tour with David Lee Roth, which derailed last month. "I have always and will always feel a responsibility to give you my best. At the moment I do not feel that I can give you my best," the guitarist wrote on Van Halen's Web site.

"Some of the issues surrounding the 2007 Van Halen tour are within my ability to change and some are not," he continued. "As far as my rehab is concerned, it is within my ability to change and change for the better. I want you to know that is exactly what I'm doing, so that I may continue to give you the very best I am capable of."

Van Halen made no further mention if there was still any chance a summer tour could happen, saying only, "I look forward to seeing you in the future better than ever and I thank you with all my heart."

Neither Van Halen nor Roth are expected to attend the band's induction into the Rock and Roll Hall of Fame on Monday in New York. Ironically, only ex-members Sammy Hagar and Michael Anthony will represent the rock combo. As previously reported, members of Velvet Revolver will induct the band then play a short set of Van Halen covers.