Daniel Keyes, the author of Flowers for Algernon, died on Sunday at the age of 86, the New York Times reports.
According to Keyes' daughter Leslie, the cause was complications of pneumonia.
San Diego Padres Hall of Famer Tony Gwynn has died, Major League Baseball's commissioner announced. He was 54.
Gwynn passed away at a Poway, Calif. hospital after battling cancer.
See other celebrities we've lost this year
The California native, nicknamed Mr. Padre, joined the franchise in 1982. Two years later he won his first batting title, with a batting average of .351. That year he helped lead the Padres to their first World Series where they lost to the Detroit Tigers. Gwynn went on to become an eight-time National League batting champion.
Casey Kasem, the golden voice of Top 40 radio for decades, has died. He was 82.
Kasem's daughter Kerri broke the news on Sunday morning tweeting, "Early this Father's Day morning, our dad Casey Kasem passed away surrounded by family and friends. Even though we know he is in a better place and no longer suffering, we are heartbroken. Thank you for all your love, support and prayers. The world will miss Casey Kasem, an incredible talent and humanitarian; we will miss our Dad. With love, Kerri, Mike and Julie."
Actress Ruby Dee, best known for her roles in A Raisin in the Sun and Do the Right Thing, has died, her daughter Nora Davis Day confirmed to the The Associated Press. She was 91.
Renowned writer and actress Maya Angelou has died, according to CNN. She was 86.
Angelou died at her home in Winston-Salem, N.C., her publicist said.
Born Marguerite Ann Johnson in St. Louis, Angelou held several jobs, including as a manager for prostitutes, a restaurant cook and the first black female streetcar conductor in San Francisco, before becoming a writer. Much of Angelou's later auto-biographies stemmed from tragedies she overcame as a child. At the age of seven she was raped by her mother's boyfriend who was then killed by a mob after she testified against him. At the age of 17, Angelou gave birth to her son, Clyde, and began waiting tables.