A witness has described the moment she saw a woman allegedly tried to break into Prince George’s school on Tuesday.

The four-year-old, who started school last week, was back at Thomas’s Battersea the day after a 40-year-old woman was arrested for attempted burglary.

The woman was reportedly detained by undercover police officers on Wednesday in a square just 100 yards from the school.

Describing the woman’s arrest one eyewitness, who was sitting in a nearby restaurant, told the Daily Mail: “She was just sitting there really quietly with two men in ordinary clothes either side of her.

“She was completely calm and passive. She was completely unfazed.”

Although George returned to school on Thursday, there were some extra precautions taken.

George was driven into the school through a side entrance on Thursday morning by two members of staff.

A police spokesman said they were working with the school to review its security arrangements after the incident.

The woman was released on bail on Thursday until a date in October.