E. Lynn Harris, the best-selling author known for contemporary stories about African-Americans and the GBLT community, died during a West Coast book tour Friday.

He was 54.

His publisher Doubleday released the following statement on Harris’ passing: “We at Doubleday are deeply shocked and saddened to learn of E. Lynn Harris’ death at too young an age. His pioneering novels and powerful memoir about the black gay experience touched and inspired millions of lives, and he was a gifted storyteller whose books brought delight and encouragement to readers everywhere. Lynn was a warm and generous person, beloved by friends, fans, and booksellers alike, and we mourn his passing.”

According to Essence.com, the openly-gay author’s personal assistant confirmed that his health had declined in recent months but would not provide any details as to what may have caused his death.

Harris’ titles include Just As I Am, Too Good To Be True, Abide With Me, and his 2004 memoir What Becomes of The Brokenhearted.

His latest book, Basketball Jones, is about the gay lover of an NBA star. “In Basketball Jones, E. Lynn Harris explores the consequences of loving someone who is forced to conform to the rules society demands its public heroes follow. Filled with nonstop twists and turns, it will keep readers riveted from the first page to the last,” the publicity blub reads.