SINGAPORE - President Tony Tan Keng Yam paid his respects to late King Bhumibol Adulyadej at the Thai Embassy on Saturday (Oct 15) .

Dr Tan, who visited the embassy soon after he arrived in Singapore from a six-day state visit to Norway, also signed the condolence book.

Later, in a Facebook message, Dr Tan said, "Landed in airport and proceeded straight to the Royal Thai Embassy in Singapore to sign the condolence book on His Majesty King Bhumibol's passing.

King Bhumibol was an outstanding King who had dedicated his life to the welfare of the Thai people," he added.

"Under his reign, Singapore and Thailand has also strengthened our bilateral relations," he wrote.

Deputy Prime Minister and Coordinating Minister for National Security Teo Chee Hean also signed the condolence book at the embassy on Saturday.

Many Thais, dressed in black, were also at the embassy along Orchard Road to pay their respects and sign the condolence book.

King Bhumibol, the longest reigning monarch in the world, died on Thursday in a Bangkok hospital at the age of 88.

Prime Minister Prayut Chan-o- cha has declared a year of mourning, and said the people should refrain from entertainment for 30 days in Thailand.