Toronto Mayor Rob Ford says seeking treatment for substance abuse was a life-saving decision.
Speaking on his return to City Hall, Ford says he was in denial for a long time but blames no one but himself.
He says he apologizes to the city and anyone he offended and says he's embarrassed and ashamed by his behaviour.
He says his commitment to "living clean is unwavering."
Ford left for rehab May 1 just hours after a newspaper said a drug dealer had shown its reporters a video of the mayor allegedly smoking what was said to be crack cocaine.
Even before his announcement, Ford came under fire for restricting media access to the news conference and letting it be known he would be taking no questions.