Messages of comfort for the United Kingdom’s 96-year-old monarch, Queen Elizabeth II, are pouring in after a royal statement published by Buckingham Palace indicated there were concerns over her health.

"Following further evaluation this morning, The Queen’s doctors are concerned for Her Majesty’s health and have recommended she remain under medical supervision,” the statement published Thursday during lunch hours read.

"The Queen remains comfortable and at Balmoral,” it added.

Shortly after, several politicians and regular people all over the world sent in their comforting words that the Queen may get well soon.

The new UK Prime Minister Liz Truss tweeted that the whole country would be deeply concerned by the news from Buckingham Palace.

"My thoughts - and the thoughts of people across our United Kingdom - are with Her Majesty The Queen and her family at this time” reads her tweet.

Former Prime Minister David Cameron also said he was deeply concerned by the news from Buckingham Palace.

"I send my heartfelt thoughts and prayers to Her Majesty The Queen and the Royal Family at this worrying time,” Cameron’s tweet reads.

A few hours after the statement was issued, British media reported that all the Queens children were by her side or were on their way to see her.

BBC also reported that it was "very” unusual for Buckingham Palace to put out a statement about the Queen’s health, saying that it is "usually unwilling to provide a commentary on the 96-year-old monarch's medical matters, which are seen as private.”

Two days ago, Elizabeth II made her first public appearance since July this year, to meet new UK Prime Minister Truss before the latter assumed office.

Queen Elizabeth has ruled Britain for 70 years, making her the longest reigning monarch in the UK and the second in the whole world.