Kashyapa I, also known as Kasyapa I or Kassapa I, was a king of Sri Lanka, who ruled the country from 473 to 495 CE. He was the second king of the royal Moriya dynasty of Sri Lanka. Kashyapa is credited with the construction of the Sigiriya citadel and the surrounding city. He acquired the throne by overthrowing his father, King Dhatusena, and usurping his brother and rightful heir to the throne, Moggallana, in a palace coup. He imprisoned and later immured his father. Kashyapa was also known as Pithru Ghathaka Kashyapa (Kashyapa the Patricide), after this incident. He was later defeated by Moggallana, who had fled to South India and returned with an army to regain the throne. Kashyapa was killed in the battle that ensued. Acquiring the throne Though Kashyapa was the eldest son of the king, he was not the heir to the throne. Moggallana was the son of the royal consort and the rightful heir to the throne (But king Dhatusena named Kassapa as next king), while Kassapa was born to a non-royal wife. However, Kashyapa sought to acquire the throne by usurping Moggallana. He was assisted by the commander of the king’s army, Migara, who sought vengeance for a disagreement between himself and the king. Assisted and encouraged by Migara, Kashyapa carried out a palace coup and overthrew Dhatusena. Dhatusena was imprisoned, and Kashyapa became the king of the country in 473, as the second king in the Moriyan Dynasty of Sri Lanka. However, Moggallana fled to South India, fearing that his brother would assassinate him. Migara led Kashyapa to believe that Dhatusena had treasures of large wealth hidden away, and Kashyapa demanded these treasures from the imprisoned king. Dhatusena took his captors to the Kala wewa, a large irrigation tank he had constructed, and told him that it was the only treasure he had. Enraged at this, Kasyapa had his father murdered by immuring him in a wall. (an alternate story is that he was buried alive in the bund wall of the Kala weva. Construction of the city and citadel at Sigiriya Kashyapa was disgraced among the public and the bikkhus, and he received the name Pithru Ghathaka Kashyapa, meaning Kashyapa the Patricide. Because of this, and fearing an attack from Moggallana, Kashyapa moved his capital and residence from the traditional capital of Anuradhapura to the more secure location of Sigiriya rock. At