London - A convicted murderer climbed over a wall and wandered the grounds of Buckingham Palace while Queen Elizabeth II was at home, British prosecutors said Friday.

Dennis Hennessy, 41, pleaded guilty to trespass during an appearance at Westminster Magistrates’ Court.

He was arrested in the palace grounds on Wednesday evening. Police said he was not armed, and claimed security measures had “worked effectively.”

Prosecutor Tom Nicholson told the court that Hennessy walked around the gardens for about 10 minutes toward the palace before being arrested. As he was detained he asked “is Ma’am in?” — a courtesy term used for the queen.... Read More: VIN