This muderer was definetly sane when he committed such gruesome horrific acts, injecting the acid in brain and fooling people with his smart talk. In his interviews he was able to recall all the murders he did except one. What appalled me was those two police officers were on duty and did not considered a teenage boy came running towards them bleeding, drugged and handed this boy back to the muderer, there behaviour was callous and they were fired but got back the job. The parents were so engrossed in their own life that they were not able to provide peace and love and neglected their child who become a killer and ended up taking so many lives.