TORONTO - A book on disgraced former radio star Jian Ghomeshi, written by Toronto Star investigative reporter Kevin Donovan, is slated for release in late June.

Kobo and ECW Press say they've come to an "unprecedented agreement" to co-publish "Jian Ghomeshi -- Secret Life."

Kobo says the book will reveal details and background about Ghomeshi and explore how he became fired from his post as host of CBC Radio's "Q."

Ghomeshi was fired in October amid sexual assault charges.

He faces seven counts of sexual assault and one of overcoming resistance by choking, but his lawyer has said he will plead not guilty to all charges.

Kobo and ECW Press say Donovan, who has covered the story for the Star, has interviewed a number of women and former colleagues from Ghomeshi's past.