A press note released by the University of Bonn has suggested that 1,400 years old bones, which are found in the Uxul's artificial caves in Mexico, belong to Uxul nobles.

According to the researchers, the marks found on the bones of these skeleton suggest that they are centuries old. Till now, sex and age of 15 skeletons have been identified by the researchers. It is found that out of 15 identified skeletons, 13 were men and two were women. The age of all these 15 skeletons is expected to be between 18 and 42. Researchers also believe that most of these people had problems of tooth decay and malnutrition as well.

Around 24 skeletons were excavated from a water reserve, which is very old.

"Aside from the large number of interred individuals, it already became apparent during the excavation that the skeletons were no longer in their original anatomical articulation", said Nicolaus Seefeld, an Archaeologist at University of Bonn.

He added that skulls of all the skeletons were separated from the bodies and even the bottom jaws were detached. He also ruled out the possibility of a secondary burial ritual as followed in Mayan times.

Researchers believe that these deaths happened due to some violence, as there are cutting signs on many of the skulls, which indicates that they were hit by a sharp object.

The excavation of mass grave reinforces the practice of dismemberment of war prisoners, which is mentioned in Maya art.