'Cosby' author sorry for omitting assault charges

NEW YORK (AP) — The author of a new Bill Cosby biography is apologizing for not pursuing allegations that the comedian had drugged and sexually assaulted numerous women.

Mark Whitaker, whose "Cosby: His Life and Times" was published in September, tweeted Monday that he was wrong not to "aggressively" look into the charges and promised to address them "at the appropriate time." Whitaker's book has been widely criticized for idealizing Cosby, although some critics praised it upon release. Amazon.com included "Cosby" among its best books of September and top 100 biographies and memoirs of 2014. The book includes blurbs from David Letterman, Jerry Seinfeld and Mary Tyler Moore.

Cosby cooperated with Whitaker, agreeing to be interviewed. But, according to Simon & Schuster, Cosby had no control over the book's contents.