Manchester, UK - Cristiano Ronaldo and his partner Georgina Rodriguez have announced that their baby son has died.

The couple released a message that appeared on Manchester United and Portugal forward Ronaldo's social media accounts on Monday.

Many outlets have reported their son died during childbirth. His twin sister has survived.

"It is with our deepest sadness we have to announce that our baby boy has passed away," it said. "It is the greatest pain that any parents can feel.

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"Only the birth of our baby girl gives us the strength to live this moment with some hope and happiness. We would like to thank the doctors and nurses for all their expert care and support.

"We are all devastated at this loss and we kindly ask for privacy at this very difficult time.

"Our baby boy, you are our angel. We will always love you."

The 37-year-old soccer star had announced in a social media post in October that he and Rodriguez were expecting twins.

"Our hearts are full of love - we can't wait to meet you," he wrote at the time.

Ronaldo additionally shares a three-year-old daughter, Alana, with Rodriguez. He also has an 11-year-old son, Cristiano Jr., and twins Eva and Mateo. The athlete frequently posts photos on social media with his children, writing "#prouddad."

Manchester United posted in support on their social media on Monday: "Your pain is our pain, Cristiano. Sending love and strength to you and the family at this time."