Thailand’s Queen Mother Sirikit, renowned for her elegance, dedication to the monarchy, and efforts to support rural communities and environmental projects, has passed away.

The Royal Household Bureau announced she died Friday at a Bangkok hospital. She had developed a blood infection on October 17, and her condition failed to improve despite her medical team’s efforts, according to CNN.

Sirikit was 93.

She had largely withdrawn from public life in recent years due to declining health. Her husband, King Bhumibol Adulyadej, passed away in October 2016.

The royal family and household will observe a period of one year in mourning. Public offices will fly flags at half-mast for one month, and government officials are asked to mourn for one year.

Thai Prime Minister Anutin Charnvirakul can

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