He was born in 492 BCE and assumed the throne in 491 BCE.

Ajatashatru expanded his kingdom through military conquests, including the powerful Vajji Republic.

He also made Pataliputra the capital of the Magadha Kingdom, which grew into one of the largest cities in ancient India.

Ajatashatru had a complicated relationship with the Buddha and Mahavira. Initially, he was hostile to the Buddha and even tried to assassinate him.

However, he later became a patron of the Buddha and constructed a monastery for him.

During his reign, Ajatashatru was known for constructing numerous buildings and monuments.

Although Ajatashatru had multiple spouses, including a princess from the Kosala Kingdom, he passed away circa 460 BCE, presumably due to natural causes.

His son Udayin succeeded him as king and continued expanding the Magadha Kingdom.