The murder of 78-year-old Mohammad Iqbal Ibrahim Seliya in south Mumbai’s Madanpura has revealed two divergent narratives on what led to the killing — one pointing to a decades-old suspicion of betrayal linked to the city’s underworld, and the other to a financial dispute within an extended family.

According to a press release issued by the Mumbai Crime Branch, the prime accused, 28-year-old Sadiq Jawar, during his interrogation, said he killed Ibrahim Seliya, his great uncle, to avenge the 1997 encounter in which his uncle, gangster Sadiq Kalia, was shot dead.…