IRISH singer Niall Horan suffered an injury live on air as The Voice US fans told him to “be careful”.

The Mullingar star joined the latest season of the Voice US, his second year as part of the of the show.

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He joined Reba McEntire, Gwen Stefani, and John Legend and they have been fighting for their favourite singers.

During a recent episode, the One Direction star managed to nab another singer for his team.

The show shared a clip on Instagram of Niall celebrating his achievement.

At the beginning of the clip, Niall was running back to his seat and jumping for joy.

Gwen Stefani was booing Niall as he was grinning at the three other judges.

The pair were fighting over Brailey Lenderman who wowed them with her talent.

Speaking in the clip Reba said: “I’ve got one spot left so I’m just waiting for that final piece of the puzzle to make my puzzle complete.”

Niall came back and spoke about Brailey’s husband Tom.

He said: “She’s right the husband is a good-looking man. They call him Hot Tom.”

John replied: “Hot Tom? They call him Hot Tom?”

Niall then revealed he had injured himself when he was jumping for joy.

He said: “Yeah even the mother calls him Hot Tom and I also think I just pulled a hamstring no joke. I’m not even joking.”

The judges were laughing at Niall but Reba jokingly said they needed a “medic”.

Fans were concerned about Niall and they told him to be careful in the Instagram comment section.

Lauren commented saying: “Niall! Take care of your legs!”

One follower said: “Aww poor Niall.”

Another fan wrote: “Nialler you better be careful please for your fans.”

While Kimie also commented saying: “Be careful @niallhoran, you’ll pull another hammy!”

During a previous episode, Niall got into a firey row with his co-star Reba over a singer as she called him a “wild one”.

The show shared a clip on their Instagram page where Reba was trying to win over a singer.

Speaking at the beginning of the clip, she said: “Well if you did choose as your coach you know we’d have…”

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However, Niall interrupted her speech as he pushed a button that had some pre-recording from his friend Blake Shelton who left the show last year.

The clip said: “Niall is like a son to me.”

This made everyone burst out laughing and Reba tried to continue speaking but Niall interrupted her again as the next clip said: “Niall is a global superstar.”

Reb asked her co-star: “How much did you pay him?”

Gwen chimed in saying: “I am so mad at him right now.”

Niall then said: “I told you our relationship was strong. Sorry Reba, sorry go.”

Reba stood up and walked over to Niall putting herself in front of him and his button.

She continued saying: “We would be having a lot of fun picking the songs together because we do know…”

However, he managed to slip by her and the next message said: “Niall is an attractive guy.”

She called herself “the queen” as she jokingly said to the singer: “I would keep you away from Niall because he’s a wild man.”

The show captioned the video saying: “@niallhoran LOVES to push @reba’s buttons… literally.”

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