ABC journalist and 7.30 presenter Leigh Sales has tweeted she is “totally fine” after a man threw yoghurt at her during an event in Perth.

Sales was presenting a keynote speech on her new book Any Ordinary Day, a memoir about how ordinary people endure traumatic events, during the Disrupted Festival of Ideas at the State Library in Perth.

She was in the middle of talking about the birth of her second child, when the tub of blueberry yoghurt hit the podium she was standing behind.

Sales appeared shocked by the incident but was quick to make light of the situation.

“That was a waste of some perfectly good yoghurt I’m afraid,” she joked.

“I’m fine, totally fine … if everyone else is alright, I’m happy to go on.”

Leigh Sales speaking at the Disrupted Festival of Ideas.

Western Australian Police say a 49-year-old man has been charged with common assault.

The man later told Seven News Perth he did not go to the event with the intention of attacking Sales, saying it was an “off-the-cuff thing”.

He apologised to the ABC presenter, but got her name wrong.

“Sorry Lisa,” he said, before being corrected by the reporter.

Oh dear, have just landed from the Perth-Syd flight to a kerfuffle over something minor – thanks for the concern, I’m totally fine! Just relieved everyone at the festival was okay and thank you to security, police, audience etc.

— Leigh Sales (@leighsales) July 28, 2019

“Oh … sorry Leigh and apologies for getting your name wrong.”

Sales later tweeted that it was only a “minor kerfuffle”.

“Oh dear, have just landed from the Perth-Syd flight to a kerfuffle over something minor — thanks for the concern, I’m totally fine!” Sales said.

The man will appear in court at a later date.