Tony Tan
Reuters

President Tony Tan Keng Yam paid his respects to Thailand's late King Bhumibol Adulyadej, at the Grand Palace in Bangkok on Monday, three days after Prime Minister Lee Hsien Loong travelled to Bangkok to do the same.

It was reported that President Tan and First Lady Mary Chee Bee Kiang, accompanied by officials from Singapore's Foreign Affairs Ministry, paid their last tribute to the revered king by laying a wreath at the Royal Urn in the Dusit Maha Prasat Throne Hall and signed a condolence book.

On the day of the king's death, the Singapore leader took to Twitter to express his condolences to the Royal Family and people of Thailand.

Since the beloved king of Thailand passed away, several regional leaders have been travelling to the Thai capital to pay their respects. While Malaysian Prime Minister Najib Razak, Cambodian Prime Minister Hun Sen and China's vice-president Li Yuanchao have already paid a visit, Indonesian President Joko Widodo and other delegates are expected to do so in this week.

Thailand's King Bhumibol Adulyadej breathed his last on 13 October leaving the hearts of his millions of subjects shattered.

King Bhumibol (88) was suffering from prolonged illness and was put on ventilation. It was also reported that he was being treated for infections, breathing difficulties, heart problems, renal failure and hydrocephalus, a condition in which cerebrospinal fluid accumulates in the brain.

Bhumibol, the world's longest-serving monarch, ascended the throne in 1946 and will be succeeded by his son Maha Vajiralongkorn.

Prime Minister Prayuth Chan-ocha told reporters during a meeting with the press on 18 October that the prince's ascension will begin within the next few weeks. However, former Privy Council president Prem Tinsulanonda is currently standing in as regent after the prince asked for time to mourn the king's demise.