Real Madrid footballer Cristiano Ronaldo has reportedly become the father of surrogate twins.

The children, a boy and a girl called Eva and Mateo, were born on Thursday according to Portuguese TV channel SIC.

'Mateo and Eva, those are the names of Cristiano Ronaldo’s twins,' the channel claimed. 'The boy and girl were born to a surrogate mum. It’s a secret that Cristiano Ronaldo hasn’t yet revealed to the rest of the world.'

Scroll down for video

Claims: Real Madrid footballer Cristiano Ronaldo has reportedly become the father of surrogate twins

The TV station did not initially say where it believed the children were at the moment and revealed there were no pictures yet of the babies.

There has been immediate no official confirmation of the news from the footballer or his agents, but several Portuguese websites and newspapers including leading Portuguese daily Correio da Manha were running the story on Friday.

A UK newspaper reported in March that Ronaldo was due to become the father of twin boys.

Proud dad: The footballer is already a father to six-year old Cristiano Ronaldo Jr, known as Cristianinho

It said a surrogate mother on the west coast of the US was heavily pregnant and was expecting the babies “very soon.”

Ronaldo, who is dating Spanish beauty Georgina Rodriguez, stunned the world in July 2010 by announcing on Twitter and Facebook he had become a father.

Cristiano Ronaldo Jr, known as Cristianinho, is now six.

The child’s proud grannie Dolores Aveiro revealed in an approved biography published in July 2014 in Portugal that she had picked the youngster up from a private hospital in Florida.

Big news: Ronaldo, who is dating Spanish beauty Georgina Rodriguez (pictured, with Cristianinho) stunned the world in July 2010 by announcing on Twitter and Facebook he had become a father

Cristiano’s family has always refused to discuss whether his son was born to a surrogate mother, despite claims by a former nanny that the footballer’s sister Katia had told her he had two Mexican mums.

Carer Maria Manuela Rodriguez, who worked at Katia’s house in Moita near Lisbon for 10 months, told leading Portuguese tabloid Correio da Manha in August 2011: 'Once I saw a newspaper article saying the child’s mother wanted him back.'

Katia said: ‘That’s a lie, because the mum is Mexican and she didn’t even see if it was a boy or a girl, because she was a surrogate mum” adding that she told her Cristianinho was the “child of two mums."'

Tight lipped: Cristiano’s family has always refused to discuss whether his son was born to a surrogate mother, despite claims by a former nanny that the footballer’s sister Katia had told her he had two Mexican mums

'She even told me the child had two mums, that the eggs were from one and another carried and gave birth to the child. And that both were Mexican.

'The child was born in a private clinic and the mother didn’t even see him, because she was covered up. The baby was born and she doesn’t know anything about him.'

The Real Madrid striker took legal action over the article, claiming the newspaper had intruded into his private life.

A court in Lisbon ruled in favour of the footballer and fined a newspaper exec, the former nanny and the two journalists who wrote the story.

An appeal against the decision is understood to be ongoing.

Rumour: There had been recent speculation Ronaldo’s girlfriend Georgina is pregnant

Cristiano has never taken action over other stories about his son’s mum which are given less credence in Portugal, including one that claimed she was a penniless American waitress he paid £10 million to to keep her identity secret and hand the baby over to his family after a one-night stand.

The July 2010 Sunday Mirror report said he met her in a Los Angeles restaurant during a trip to the US in 2009, charming her with the line: “Me, you **** ****’.

Speaking in July 2014, Cristiano’s older sister Elma admitted: 'Cristiano sometimes asks about his mum. Once we told him that she was in Heaven, but my brother and my mum didn’t like that and asked us not to repeat it.

'We say now that his mum went travelling. He goes silent, forgets about it and doesn’t ask anymore.”

Expecting? There has also been recent speculation that Georgiana is pregnant

There has also been recent speculation that his girlfriend is pregnant.

Cristiano caused many to jump to conclusions when he posted a romantic photo of himself and Georgina on Instagram in May.

The footballer was pictured with his hand on her belly and captioned the image with a heart emoji - but his mother Dolores Santos has since insisted there was no subliminal meaning.

'It's just nonsense' she said. 'It's just a hand on the belly, and as far as I know, Cristiano will not be a father again.'

Georgina later posted a picture of herself to Instagram at the doctors just days after rumours spread that she was pregnant, but it appears she was visiting Dr Rafik Dehni who specialises in plastic surgery and skin treatments.

MailOnline has contacted Ronaldo's representatives for further comment.