Bradley Cooper is forced to run out of Maestro press conference to rush to his six-year-old daughter Lea’s side after receiving an EMERGENCY CALL from her school nurse

Bradley Cooper walked out of a press conference for his film Maestro in New York on Thursday afternoon to talk to the school nurse about his six-year-old daughter Lea.

Cooper, who has joint custody of Lea with ex Irina Shayk, was 20 minutes into a press conference to promote the Netflix film – in which he plays composer and conductor Leonard Bernstein – when he looked at his phone and said: 'Sorry. The school nurse just called me.

'Can I leave the room for a moment to call them back, then you can continue. Is that good?'

When the 48-year-old returned, he explained: “I have to go to school to do something with Lea that is necessary… I have to apply something that they don't allow… I have to do it, so it's about ten minutes walk.'

The star was in the middle of a conversation when he had to step away to talk to the school nurse about an issue he needed to help with

DailyMail.com has contacted Bradley's spokesperson for comment.

The press conference incident took place after the nine-time Oscar nominee was photographed as a father with his child in New York on December 15.

The Silver Linings Playbook star held a cup of coffee while wearing a black puffer, gray pants and black and red Nikes.

Meanwhile, his daughter was animated as she walked alongside her dad in a white top with light blue printed trousers and a long navy blue puffer coat.

A few days earlier, young Lea made her red carpet debut with her famous father.

While Cooper looked dapper in a three-piece navy blue suit with a white shirt and black tie, his daughter wore a sweet dress.

Lea delivered her own red carpet style in a leopard print Dolce & Gabbana dress paired with sparkling gold ballet flats.

The youngster had her blonde hair pulled back, side-swept bangs and even wore a red manicure for her special evening.

She carried a red bag and posed for photos with the film's cast, including Maya Hawke, Matt Bomer, Sarah Silverman and Carey Mulligan.

Just days before the incident, young Lea made her official red carpet debut alongside her famous father

The youngster, who favors Bradley with her blue eyes and blonde locks, held hands with her movie star parent as they walked the red carpet.

But not only was Lea her dad's date for the evening, she also appears in the film as a younger version of Maya Hawke's character Jamie Bernstein, according to IMDb.

But the glitz and glamor of a big Hollywood movie premiere was lost on the little girl after a while.

While her father chatted with Mulligan and Lady Gaga, Lea grabbed a coloring book and sat on the floor the floor of the Academy Museum of Motion Pictures.

In images captured by Entertainment tonightLea could be seen scribbling before looking up at Cooper and adorably trying to get his attention by repeatedly saying, “Daddy!”

Lea delivered her own red carpet style in a leopard print Dolce & Gabbana dress paired with sparkling gold ballerinas

Lea carried a red bag and posed for photos with the film's cast, including Maya Hawke, Matt Bomer, Sarah Silverman and Carey Mulligan

Cooper shares joint custody of the youngster with ex-girlfriend Irina Shayk, pictured alongside Bradley and his mother Gloria Campano

Although her mother did not attend the premiere, she offered her well wishes on Instagram: “Congratulations @maestrofilm. So proud Dad and Lea,” she said beneath a black and white Maestro poster.

Cooper and Shayk dated for five years, but never married. He is now dating supermodel Gigi Hadid, while Shayk is in a romance with sports star Tom Brady.

The talented actor has been nominated three times for best actor and once for best supporting actor, but has never won an Oscar.

He is campaigning hard for the new film Maestro, which he directed, produced and stars in, alongside Mulligan as Bernstein's wife Felicia.