Amber Holt, 24, was also charged with possessing cannabis after the incident at the Albury Entertainment Centre.

Mr Morrison told The Border Mail the act was "just disrespectful" and his main concern was for the older woman, Margaret Baxter, who was knocked over during the incident.

A NSW Police statement said "the woman was arrested and taken to the Albury Police Station".

"During a search of the woman, police located cannabis. The Victorian woman was charged with common assault and possess prohibited drug."

Ms Holt was granted strict conditional bail and is due to appear at Albury Local Court on May 27.

Mr Morrison condemned her actions on twitter before making light of the incident at a Liberal event shortly afterwards.

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"There was an individual today that came along and the women of the CWA could really show her what you're meant to do with eggs," he said.

The Cotton On employee spoke briefly to journalists outside the venue, while carrying a six pack of eggs.

She said she was "sorry" the woman had fallen over and when asked if a peaceful protest would have been better, she replied: "Cos that gets through."

Ms Holt has expressed her political views on her Facebook page which include sharing posts by the Greens Senator Richard Di Natale but Greens candidate for Farrer Dean Moss said she is unknown to the party.

Member for Farrer Sussan Ley was about five metres away from the incident but did not see any of the drama and didn't think it would hurt Albury's reputation.

"People who know Albury know that we're a welcoming community, we're respectful of different opinions and we don't let the occasional nasty incident detract from our very strong values in what we stand up for and what we represent," she said.

CWA NSW state president Annette Turner confirmed the woman was not a CWA member.

Cotton On declined to comment on her employment.

4PM: The woman who allegedly threw an egg at Prime Minister Scott Morrison has been charged with common assault and possessing a prohibited drug.

Police located cannabis during a search of the woman, following her arrest after the incident at the Albury Entertainment Centre.

The 24-year-old will appear in Albury court on May 27.

1.30PM: Inspector Scott Russell has provided a brief update on the egging incident outside Albury police station.

A spokesperson for NSW Police said a 24-year-old woman was in custody "following an incident with the Prime Minister in Albury".

"Police currently have a female in custody in relation to an incident that occurred earlier today involving the Prime Minister," Inspector Russell said.

"Inquiries into that incident are continuing."

The woman allegedly responsible for throwing the egg spoke briefly outside the Albury Entertainment Centre, while carrying a six pack of eggs.

She said she had not intended for a woman to fall over, saying: "I am sorry for that."

When asked if a peaceful protest would have been better, she replied: "Cos that gets through."

Prime Minister Scott Morrison, meanwhile, made light of the incident at a function for Indi candidate Steve Martin.

"There was an individual today that came along and the women of the CWA could really show her what you're meant to do with eggs," he said at the Huon Hill Hotel.

11.20AM: A woman has been arrested after allegedly throwing an egg at Prime Minister Scott Morrison in Albury.

Security pounced on the woman immediately after the incident at the CWA state conference at the Albury Entertainment Centre.

She threw the egg, which didn't appear to break on Mr Morrison, from behind.

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A woman attending the CWA conference was knocked over as the drama unfolded.

"My concern about today's incident in Albury was for the older lady who was knocked off her feet. I helped her up and gave her a hug. Our farmers have to put up with these same idiots who are invading their farms and their homes," Mr Morrison tweeted.

"We will stand up to thuggery whether it's these cowardly activists who have no respect for anyone, or militant unionists standing over small businesses and their employees on work sites."

Tuesday morning's incident in Albury follows a similar drama in March, when a teenager smashed an egg into the head of right-wing senator Fraser Anning.

More to come