A man has sadly been pronounced dead after being found on fire outside Kate Middleton and Prince William‘s Kensington Palace earlier this week.

Hours before the incident, a London hospital reportedly contacted local authorities to report a missing patient. At around 3 a.m., a person, thought to be the aforementioned patient, was spotted acting suspiciously near Kensington Palace’s front gates. When police arrived, the man — who was in his forties — was on fire and later pronounced dead by responding firefighters and medical personnel.

kensington palace getty images

Kensington Palace, photographed in January 2013.

According to BBC News, the Duke and Duchess of Cambridge were not home at the time of the scary event. “This incident is not being treated as terrorist-related,” a police spokesperson told the news outlet in a statement on Tuesday, Feb. 9.

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Kate, 34, and William, 33 — who are parents to Prince George, 2, and Princess Charlotte, 9 months — are currently staying at their Anmer Hall home in the English countryside.