Satyasena, along with His friend Satyajit, who was the King of heaven, Indra, killed all the untruthful, impious and misbehaved Yakṣas, Rākṣasas and ghostly living entities, who gave pains to other living beings.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
सोऽनृतव्रतदुःशीलानसतो यक्षराक्षसान् । भूतद्रुहो भूतगणांस्त्ववधीत्सत्यजित्सखः
so'nṛtavrataduḥśīlānasato yakṣarākṣasān | bhūtadruho bhūtagaṇāṃstvavadhītsatyajitsakhaḥ
SB 8.1.26