The Thailand International Film Destination Festival has cancelled the screening of Twilight Over Burma, a German TV movie about the marriage between a Shan prince and an Austrian woman.

According to a report on Wednesday in Thai-language daily Khaosod, the romantic film was dropped from the festival program due to “national relationships.”

The report added that three other productions were banned from the festival by the Thailand Film and Video Censorship Board: Pattaya (2016); Happy Hour in Paradise (2015); and Detective Chinatown (2016).

Twilight Over Burma is based on a true story, originally published in a book by protagonist Inge Sargent. It focuses on her life after she married Sao Kya Seng, the Prince of Hsipaw, and moved to Shan State in 1953. It tells how the prince was arrested and imprisoned after General Ne Win launched a coup d’état in 1962.

The German-produced movie was also removed from the program at the Myanmar Human Rights Film Festival on June 14 by Burma’s Ministry of Information Censorship Board, citing reasons of “national reconciliation.”

The film’s producer, Alfred Deutsch, told Khaosod news agency that it was confirmed to him on June 13 that his movie would be shown in Bangkok, but later he learned it had been banned.

“I don’t know by whom and why [the film] was rejected,” Deutsch told Khaosod.

Twilight Over Burma was due to premiere in Thailand twice in May: once in Bangkok and also in the northern city of Chiang Mai. However, the film – partly filmed in Thailand and mostly played by Thai actors – was blocked by the national review committee without explanation.

On 23-25 June, at the invitation of Thai Prime Minister Gen. Prayuth Chan-o-cha, Burma’s State Counselor Aung San Suu Kyi made her first official visit to the country since her party took power in April.

In late May, Burma’s Commander-in-Chief Senior-General Min Aung Hlaing also paid a visit to Thailand to help promote bilateral relations, according to a report in Bangkok Post on May 25.