(Reuters) - Apple Inc on Wednesday said Antonio García Martínez, a former Facebook Inc product manager who joined Apple recently to work in its advertising business, is no longer with the company.

García Martínez, who came to Silicon Valley after a stint on Wall Street, wrote the 2016 book "Chaos Monkeys" about his time in the technology industry. He joined Apple as a product engineer in Apple's advertising platform business in April, according to his LinkedIn page.