The quantum of punishment will be pronounced by the court on December 19.
The fourth additional district and sessions court Judge B K Naik found Mohan Kumar, accused of killing several young girls by administrating cyanide to them, guilty of murdering Leelavathi, a resident of Vamadapadavu, and Anitha, a resident of Barimar village of Bantval taluk.
Leelavathi was taken to Mysore on the pretext of an interview and killed by giving cyanide pill at Mysore KSRTC bus stand. She had gone missing on September 9, 2005, according to police.
Mohan was convicted under various IPC sections including 302 (punishment for murder).