Cosby author sorry - The man responsible for a recently published autobiography of Bill Cosby has apologized for not 'aggressively 'investigating the rape allegations against the famous comedian.

"If true the stories are shocking and horrible," Mark Whitaker wrote on Twitter. He has vowed to dig into the charges and address them at an appropriate time.

The Cosby author sorry message was made in response to an article by New York Times' David Carr, in which he questioned why it has taken so long for the accusations to come to light. Carr concludes that people who could speak up didn't do so because they didn't want to offend Cosby.

"David you are right," Whitaker wrote. "I am wrong to not deal with the sexual assault charges against Cosby and pursue them more aggressively."

'Cosby: His Life and Times' was published in September by Simon & Schuster. A preview of the book says it is based on in-depth research and interviews with up to 60 of the comedian's closest acquaintances. The publisher told AP that Cosby had no control over the content of the book.

The Cosby author sorry message comes as the book continues to be mentioned in criticisms of the comedian. The rape allegations against Bill Cosby had made the news in 2004, after he was sued by Andrea Constrand. They resurfaced in the headlines again after comedian Hannibal Buress accused Cosby of having a superiority complex.

Over the past few weeks, several high profile names have joined the list of women who are accusing the comedian of drugging and sexually assaulting them. Bill Cosby, who has been silent all the while, recently released a statement saying the allegations against him are simply 'innuendos.'

His lawyer Martin Singer has also released a statement to condemn the recent accusations. "The new, never-before-heard claims from women who have come forward in the past two weeks with unsubstantiated, fantastical stories about things they say occurred 30,40, or even 50 years ago have escalated far past the point of absurdity," he wrote. Singer said the stories were false and urged the accusers to sue if they are convinced that they have a case.

The Cosby author sorry message definitely adds to the intrigue surrounding these accusations. Some critics have labeled the Cosby author sorry message as Whitaker's attempt to absolve himself of complicity after having to forgo writing about the controversial allegations earlier out of concern not to offend Cosby.