Well-wishers sign guestbooks for Thailand's King Bhumibol Adulyadej at the Grand Palace in Bangkok, Thailand, October 13, 2016. REUTERS/Athit Perawongmetha

Well-wishers sign guestbooks for Thailand’s King Bhumibol Adulyadej at the Grand Palace in Bangkok, Thailand, October 13, 2016. REUTERS/Athit Perawongmetha

Well-wishers sign guestbooks for Thailand's King Bhumibol Adulyadej at the Grand Palace in Bangkok, Thailand, October 13, 2016. REUTERS/Athit Perawongmetha

October 13, 2016 2:54 PM (UTC+8)