A King who took the side of the Kauravas. He was son of Jarāsandha. This King came with an akṣauhiṇī of army and helped the Kauravas in the battle of Bhārata. [M.B. Bhīṣma Parva, Chapter 16, Stanza 16] . It is mentioned in [Karṇa Parva, Chapter 5, Stanza 30] that this King was killed by Abhimanyu.
Note: 1.) The Mahābhārata mentions two princes of Magadha, bearing the same name ‘Jayatsena’. The fathers of both of them happen to be Jarāsandhas. But it is said that after the death of the famovs Jarāsandha his son Sahadeva became king. This Sahadeva, with his brother Jayatsena took the side of the Pāṇḍavas and fought against the Kauravas. Hence the King Jayatsena mentioned here must be the son of some other Jarāsandha of the Kingdom of Magadha.]