On 29 October 2025, the Norwegian Royal Palace published a Condolences message from His Majesty King Harald V of the Kingdom of Norway to His Majesty King Maha Vajiralongkorn of the Kingdom of Thailand on the passing of Her Majesty Queen Sirikit The Queen Mother.
On the same day, Her Excellency Ambassador Nitivadee Manitkul received Mr. Olav Heian-Engdal, Lord Chamberlain of the Royal Palace and Mrs. Vibeke Rysst-Jensen, Chief of Protocol of the Royal Ministry of Foreign Affairs, who gave an honor to sign the book of condolences at the Royal Thai Embassy in Oslo.