In the charming video that has become an online sensation, Professor Robert Kelly gets interrupted live on air by his daughter, Marion. Picture: BBC

Professor Robert Kelly was being interviewed live about the impeachment of South Korean president Park Geun-hye, when his children burst in behind him before quickly being followed by his wife who saved the day, reports The Sun.

Professor Kelly’s mother Ellen Kelly said she thought the young children, Marion, 4, and James, who is nine-months, probably thought their dad was Skyping their grandparents from their home in South Korea.

Speaking from her home in University Heights, outside Cleveland, Ohio, Ms Kelly told The Daily Mail: “Robert usually Skypes with us from his home office, which is where he did the interview.

Professor Robert Kelly gets interrupted live on air by his daughter. Picture: BBCSource:Supplied

“The kids probably heard voices coming from the computer and assumed it was us.

Prof Kelly’s mother Ellen Kelly said she thought the young children, Marion, 4, and James, who is nine-months, probably thought their dad was Skyping their grandparents from their home in South Korea.

Little Marion and baby James want to check out what Dad is doing. Picture: BBCSource:Supplied

Speaking from her home in University Heights, outside Cleveland, Ohio, Ms Kelly told The Daily Mail: “Robert usually Skypes with us from his home office, which is where he did the interview.

“The kids probably heard voices coming from the computer and assumed it was us.

“It was just hilarious.”

The 72-year-old said that she hoped her son’s expertise in South Korean politics would be recognised through the interview.

Professor Robert Kelly’s wife Jung-a Kim attempts to get the kids out of the room. Picture: BBCSource:Supplied

She said she was proud of her son but added: “Life happens. The lesson is to lock the door.”

Prof Kelly was midway through answering the presenter’s questions about Park Guen-hye when his little girl, dressed in a yellow jumper, is seen opening the door behind him and wandering into the room.

Young Marion swings her arms happily as she walks over to her dad, who has clearly spotted her on his screen and attempts to push her out of the way.

Professor Robert Kelly lives in South Korea with his wife, Jung-a Kim, a yoga teacher, and their two children, Marion, four, and nine-month-old James. Picture: FacebookSource:Supplied

The broadcaster continues to ask his next question while pointing out: “ ... I think one of your children has just walked in.”

Meanwhile baby James follows his sister through now open doorway and uses a baby walker to make his way to Mr Kelly, a professor of political science and international relations based in Pusan, South Korea.

Professor Robert Kelly is worried things are going to get “weird” after a video of his kids crashing his live TV interview became an internet sensation. Picture: TwitterSource:Supplied

Prof Kelly’s wife Jung-a Kim can be seen dashing into the room, desperately trying to get the children out.

Grabbing both children by their arms, the mother drags them backwards but in her hurry, accidentally knocks books off the nearby table before banging into the door which had slammed behind her.

The older child can be heard shouting: “Oww, mummy!”

His expression says it all. Picture: BBCSource:Supplied

Their dad tries to remain professional but closes his eyes for a few seconds and apologises as they make their dramatic exit.

His mum said that her son was “just embarrassed” — but might not be fully aware of his internet fame.

The professor continues to answer the question while in the rear the mum can be seen on her hands and knees quickly trying to shut the door.

A clip of the interview was posted on Twitter and has quickly gone viral.

Robert has only replied to a handful of tweets, thanking someone who commented that he was a “damn good Korea analyst”.

Little Marion Kelly has become an internet sensation. Picture: BBCSource:Supplied

He has also been praised for working from home, with one woman writing: “So many of us, working at home and trying to be parent and professional ... weeping with laughter, recognition and appreciation.”

Another added: “Thanks for the good cheer. Terrific. I will be more interested on your South Korean political analysis moving forward.”

Tony Brown said: “I just can’t stop watching it on repeat.”

Afterwards Professor Kelly was asked if he minded the video being shared by a BBC team member on Twitter.

He responded: “What would that mean, please? Re-broadcasting it on BBC TV, or just here on Twitter? Is this kinda thing that goes ‘viral’ and gets weird?”

This story originally appeared in The Sun and is reprinted with permission