The Series of Desecrations at the Church of Saint John the Baptist in Arizkun turns a run of apparent vandalism into a more disturbing investigation when an altar fire reveals a burned infant arm identified as a Mairu-beso. The attacks damage objects central to worship, but the bones make the church itself a site where religious history, local memory, and folk belief converge. The investigation does not settle who is responsible or why; instead, it exposes competing explanations and the difficulty of separating a crime’s physical evidence from the meanings attached to it.

The attacks and the discovery

The sequence began at night when an intruder forced the sacristy door and split a baptismal font with a single blow. The font was an artwork more than four hundred years old. A week later, someone returned and hacked a front-row pew into splinters. Neither attack resembled ordinary theft: the perpetrators did not take money from the collection box or other valuables. The damage was directed at the church and its sacred furnishings.

The third attack brought fire into the sanctuary. An intruder used a torch to ignite the altar cloths; because they were linen, they burned slowly. A nearby chaplain, who had begun checking on the church after the earlier incidents, noticed lights inside and called emergency services. By the time a patrol arrived, the fire had gone out and the visitor or visitors had disappeared. The remaining signs of the small blaze made the latest intrusion look at first like another episode of desecration, but the object beneath a sheet at the altar changed the investigation’s stakes.

Inspector Iriarte uncovered what appeared to be dry, yellow bamboo reeds, one end burned. Doctor San Martín recognized the object as a Mairu-beso. When he lifted the sheet farther, it revealed broken reeds and the tiny bones forming a hand. Amaia Salazar identified it as a child’s arm; San Martín clarified that it was skeletal remains, probably from a child less than a year old. Preliminary analyses later confirmed human remains belonging to a creature under one year old, without resolving the larger questions of identity or how the bones came to be there.

What the Mairu-beso signifies

Jonan Etxaide agreed with San Martín’s identification and explained its traditional conditions: a Mairu-beso had to come from an infant who died unbaptized. According to the belief he described, such an arm could be carried like a torch for magical protection, while its smoke was thought to have a narcotic power capable of putting a household—or even a whole village—to sleep. The story thus attached a possible folkloric use to the very form of the burned object, though the account does not establish that the attackers acted from belief in those powers.

The distinction between the physical finding and its folkloric interpretation matters. The early analysis could establish that the bones were human and infant-sized; it could not establish baptismal status. Etxaide later explained why the tradition excluded adults: the supposed power depended not only on being unbaptized but on the age and condition of the dead child, who might have been a fetus, stillborn, or dead in the first months of life. In the belief as he recounted it, a newborn’s soul remained in transit between worlds. Unbaptized children were also said to remain connected to their parents’ homes as protective presences. Some families, he said, preserved a cradle, set a place at the table, or left food for the dead child. These customs make the arm more than a macabre instrument in the case’s cultural frame: it evokes both the vulnerability of a child denied burial within the usual religious order and a domestic practice of keeping the child present.

A history of exclusion

The possible social meaning of the attacks rests partly on the history of the Agotes, a community associated with Bozate. Etxaide described their origins as disputed. Theories placed their arrival in Navarre across the Pyrenees amid medieval war, famine, plague, and religious persecution. One account identified them as Cathars persecuted by the Spanish Inquisition; others proposed deserters who contracted leprosy or a mixture of outcasts brought to serve the local feudal lord, Pedro de Ursua, whose palace-fortress survives in Arizkun. These possibilities were presented as competing historical explanations, not as a settled account.

What Etxaide emphasized was the long exclusion itself. For centuries, Agotes were prevented from leaving Bozate to live elsewhere, running businesses, or marrying outside their group. They were assigned work in woodcraft and leather, trades regarded as unhealthy, and required to wear identifying marks and ring a bell to announce their presence, as if they were lepers. They were Christians who observed Catholic rites, yet church practice marked them apart: they had a separate baptismal font, their holy water was discarded, and they could be barred from the altar and directed to a smaller entrance. In Arizkun, a grille once separated them from other worshippers; its removal registered the continuing shame attached to that treatment.

Competing explanations and the investigation

At a meeting involving police and church authorities, Padre Sarasola recounted the attacks and argued that the human bones gave the case a particularly dangerous complexity. He suggested that the desecration might express hatred of the Church grounded in a misunderstood historical grievance, and asked that the matter be handled discreetly. Parishioners were already alarmed and, in his view, beginning to understand the attacks’ possible origins. Amaia Salazar was assigned to lead the investigation with her team because of her investigative abilities and knowledge of the area.

The police discussion did not turn that possibility into a conclusion. Amaia initially struggled to see why the attacks warranted such an unusual gathering when, beyond the damage to an old liturgical object, the case seemed to her like vandalism. She later organized the inquiry around the meaning and mechanics of desecration: an attack on a sacred place using human remains called for a profile more precise than the label vandalism alone. She initially favored vandalism, while keeping open the possibility of a socially motivated attack connected to Arizkun’s history. Art theft was considered a poor fit because such thieves typically studied their targets, avoided conspicuous damage, and took valuable objects rather than acting impulsively. The investigation therefore begins not with a confirmed motive but with a tension between senseless destruction and a pointed historical grievance.

Significance

The sequence escalates through a set of objects: a baptismal font, a pew, altar linens, and finally the small bones beneath them. Each intrusion damages or violates a different part of the church, while the arm makes the conflict impossible to treat as property damage alone. Its interpretation links the present crime to a tradition about unbaptized infants and to the exclusion of the Agotes from religious life. Yet the evidence preserves a gap between those resonant histories and proof of the attackers’ intentions. The case’s force lies in that uncertainty: the church bears the visible injuries, while the infant remains raises questions of burial, belonging, and inherited shame that the investigation has not yet answered.