Pataudi Palace in Bangkok is no stranger to intruders.

But last year, it was attacked by a pho poo thief.

Now, police say, a third thief has entered the palace and is trying to break into its secret garden.

Pho pooing is a widespread phenomenon, but in Bangkok it has become particularly serious, with at least four people in Thailand dying in recent years from eating contaminated food.

In 2015, the city’s only official pho restaurant, the phoo Pata, was robbed of almost all its meat.

Police have warned the public to avoid pho in the capital, as well as the neighbouring provinces of Pattaya and Chiang Mai.

The palace is not equipped with CCTV cameras.