The Queen has been targeted by Twitter trolls after sending her first royal tweet.
The official @BritishMonarchy account she used saw its followers grow by tens of thousands, but was immediately attacked by trolls sending abusive messages.
A Buckingham Palace spokesman said: "We were fully cognisant of the nature of Twitter, where anyone anywhere can express their opinion, but we were delighted that so many people - in their tens of thousands - responded positively.
"We saw some tweets with profanity but that is just the nature of the format."
Scotland Yard said it had not received any complaints and was not investigating the matter.
The Queen has sent her first ever tweet - personally pressing send on a tablet at the Science Museum on London.Read the full story ›
Investigators have been searching the home of a Royal Protection officer and a police building in the grounds of Buckingham Palace where ammunition was found.
Today's arrest came about as a result of an internal investigation by the Metropolitan Police.
The investigation, by the Directorate of Professional Standards, commenced a few weeks ago following the reporting by officers from Royalty Protection of ammunition found in their personal lockers or belongings.
Assistant Commissioner Mark Rowley said a reorganisation of the force's Protection Command had "revealed a few pockets of poor behaviour".
Metropolitan Police have said that the ammunition was found in personal lockers in a dedicated police building in the grounds of Buckingham Palace.
The officer arrested in connection with ammunition found in a locker area of Buckingham Palace was not assigned to guard any individual member of the Royal Family, police said.
The arrested officer is being questioned on suspicion of misconduct in public office and unlawful possession of ammunition.
He is in custody at a London police station and will be suspended from duty.
A Royal Protection officer has been arrested following the discovery of ammunition in personal lockers in the grounds of Buckingham Palace.
Metropolitan Police, who announced the arrest, believe the ammunition came from its own supplies.
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The Duchess of Cambridge has admitted that she has been "looking forward to getting out of the house" after suffering from severe morning sickness.
She was speaking to the president of Singapore and his wife, who are in Britain on a state visit.
The Duchess of Cambridge has made her first public appearance since her pregnancy was announced.Read the full story ›
The Duchess of Cambridge is expected to take part in her first royal engagement today since news that she was pregnant with her second child was announced.
The Queen along with the Duke and Duchess of Cambridge are due to formally welcome the president of Singapore Tony Tan Keng Yam as he begins a historic state visit.
He is the first Singaporean head of state to make a state trip to Britain and he will spend his four-day trip conducting a busy round of meetings, visits and hold bilateral talks with Prime Minister David Cameron.
It will be the first time the Duchess of Cambridge has been seen at an official engagement since it was announced that she is expecting her second child.
A series of royal engagements was cancelled after her pregnancy was made public on September 8 as she was suffering from another bout of the of the illness hyperemesis gravidarum which affected her during her first pregnancy.