Its not confirmed that he died. Ved serached Mandar's death and then his missing person report
Is Mandar died or alive n save by ragahv
R made call some1 at d end of epi
My theory-M is alive & R knows his whereabouts
R is the person who took M 2hospital & he is in coma,Dr told him M will never come out of coma
Since R considers himself responsible for accident so he is getting his treatment
Like Pallavi said he is helping Nature towards other