(ANSA) – Madrid, October 31 – Italian pop star Tiziano Ferro has been hospitalized in Madrid, where he was promoting his latest single and recording a television program with local boradcaster Telecinco, according to sources close to the artist. Spanish media claimed the cause of treatment may be related to prescription-drug abuse. The singer sought to quell concern over his condition by posting comments on Facebook, thanking fans for their support. "For those that are thinking of me and that worry about me, I am fine and I feel you close by," the singer said. "I am well, really. Thanks! Tiziano".