The king and queen of Bhutan have arrived in Thailand to pay their personal respects to His Majesty the King.
King Jigme Khesar Namgyel Wangchuck and Queen Jetsun Pema arrived yesterday evening and were greeted by Thai authorities.
Bhutan's royal couple is due to pay their personal respects at the Grand Palace today.
On Friday, King Jigme Khesar Namgyel Wangchuck lit candles at a temple in Bhutan following the news of His Majesty King Bhumibol Adulyadej's passing.
The relationship between the royal families of the two countries has been warm, especially after the Bhutanese king, then the crown prince, joined the celebrations in Bangkok marking the 60th anniversary celebrations of His Majesty the King'saccession to the throne in 2006, along with royals from 25 countries.
The monarch and the royal family led a group of clergy, senior government officials and the Thai community in the southern Asian country in offering a thousand butter lamps and prayers in memory of the Thai King at the Kuenra of the Tashichhodzong.
King Jigme Khesar Namgyel Wangchuck also ordered the Bhutan flags to fly at half-mast for three days in honour of the late King.
Japanese Emperor Akihito and Empress Michiko have begun a three-day mourningperiod for His Majesty the King, according to the Kyodo news service.
The emperor sent Grand Chamberlain Chikao Kawai to the Royal Thai Embassy in Tokyo on Friday to express their condolences, the agency said.
The emperor and empress had a long friendship with the Thai monarch during His Majesty's reign, according to the agency.
The King visited Japan in 1963 and met with Emperor Hirohito, posthumously called Emperor Showa, and the following year the Japanese imperial couple visited Thailand as crown prince and crown princess on behalf of the emperor.