What religious beliefs and burial customs did the Illyrians have?

Regarding the religious and burial practices of the ancient Illyrians, historical records indicate the following:

• Religious Beliefs: The Illyrians were pagans who held a belief in an afterlife.12
• Burial Customs: Consistent with their belief in the afterlife, the Illyrians buried their dead accompanied by weapons and various personal items intended for use by the deceased.12

These customs reflect a culture that, while organized into various tribal groups across the western Balkans, maintained distinct traditions regarding death and the spiritual world.123