Mohammed Mesfewi, also known as the "Marrakesh Arch-Killer," was a Moroccan serial killer who is believed to have murdered at least 36 women. He gained infamy for his crimes, which caused widespread fear and outrage in Morocco and beyond.

Hadj Mohammed Mesfewi was known for having a troubled reputation in the ancient Medina of Marrakech. It was rumored that he had killed one or more people, yet he had managed to evade punishment. He lived in the narrow streets of the city.

In the early 1900s, several women went missing from Mesfewi's neighborhood. It was suspected that he was responsible for their sudden and mysterious disappearances. In 1906, authorities uncovered evidence that revealed Hadj Mohammed Mesfewi as the mastermind behind a series of murders that had caused the strange disappearances.

Mesfewi was a shoemaker and trader who, with the help of a 70-year-old woman named Annah Rahali, lured women to his home with the promise of food. Once there, he drugged them and killed them while they slept. Annah was eventually captured and subjected to torture by the family of one of the victims in an attempt to extract a confession.

Annah confessed to all of the murders that Mesfewi had committed over the years. The bodies of 26 victims, mutilated with a dagger, were found buried under Mesfewi's shop, and the bodies of another 10 victims were discovered under a different property that he owned. Mesfewi had robbed many of his victims to enrich himself. Annah died on the same day as a result of the public torture that she was subjected to.

Mesfewi was found guilty and convicted of his crimes. His execution, originally scheduled for May 2, 1906, was to be carried out by crucifixion. However, foreign diplomats deemed this method to be too brutal, and Mesfewi was instead executed by being walled up on June 11, 1906, in Marrakesh. He cried and screamed as he died two days later inside the wall. Annah had also died as a result of the public torture that she had been subjected to.

"Immurement" is a form of punishment that involves confining someone in an enclosed space with no exits, often until death. The term "immurement" comes from the Latin word "walling in." This type of punishment can involve enclosing someone in a tight space, such as a coffin.

Immurement, when used as a method of execution, involves confining a prisoner in a small, enclosed space such as a wall or a cell, where they are left to die from starvation or dehydration. This differs from being buried alive, in which the victim usually dies from lack of air.