Alister Pereira, the son of a Mumbai businessman who was charged with running his car over seven people sleeping on a Mumbai pavement in suburban Bandra last year, was held guilty for causing death not amounting to culpable homicide. He has been sentenced to six months imprisonment and fined Rs 5,00,000.
Please explain the highlighted one.
The evidence was conflicting, so he has been judged guilty of causing death through negligence (not controlling his car properly) .
"not amounting to" = in this context, "not as serious as"