Thailand's venerated King Bhumibol Adulyadej, the world's longest-reigning monarch, has died at the age of 88, the Royal Palace announced.
King Bhumibol passed away at Bangkok's Siriraj Hospital on Thursday. The palace did not give a reason for his death.
"His Majesty has passed away at Siriraj Hospital peacefully," a statement said, adding he died at 15:52 (08:52 GMT).
The highly revered monarch spent most of the past decade hospitalised for a variety of ailments, including kidney and lung problems.
The palace recently said the octogenarian had been in a "not stable" condition for several days after receiving dialysis treatment.