Hazrat Abu Bakr died of natural causes due to illness. He was the only Rashidun Caliph to die of natural causes.
Here's a more detailed look:
- Cause of Death: He succumbed to an illness after a period of being unwell.
- Duration of Reign: He served as Caliph for 2 years, 2 months, and 14 days.
- Burial Place: He is buried alongside Prophet Muhammad (peace be upon him) in the Green Dome at Al-Masjid an-Nabawi in Medina, which is the second holiest site in Islam.