Reports are now claiming that victim (Sheena), whom Indrani pressed as her sister, is actually her daughter.
As per Mikhail Bora, Sheena's brother, he and Sheena are both Indrani's children from her previous marriage and alleged that Indrani is behind his sister's murder.
"I have no doubt my mother Indrani killed my sister Sheena Bora," he told CNN IBN.
"Whenever I asked Indrani about my sister, she would tell me that she was abroad and too busy to speak to me," he added.
"I don't believe that Sheena was killed over property dispute. If Indrani Mukherjee doesn't admit to her crime I will place evidences before the police. I will tell the police the exact reason for the murder," he further told.
Meanwhile, former CEO of INX Media, Peter Mukherjea, on Wednesday said that Sheena had an affair with his son Rahul Mukherjea.
Mukherjea said he chose to overlook the relationship as both Sheena and Rahul were adults and could take their own decisions. Rahul is Peter Mukherjea's son from an earlier marriage.
"Sheena was in a relationship with my son, which Indrani disapproved of," Peter Mukherjea said.
He also said that he was told by Indrani that Sheena was her sister. He said he had no clue that Sheena was actually Indrani's daughter from her earlier marriage, he told NDTV and TimesNow TV.
"I am mentally very shocked by this... Sheena was having an affair with my son... When she disappeared in 2012, I was told that she was studying in the US. I asked Indrani and she showed me pictures of Sheena at a Diwali function there," Mukherjea said.
Admitting that he was completely stumped by the police action of nabbing Indrani Mukherjea, he said: "I am dumbstruck by this level of criminality..."
He assured that he was ready to fully cooperate with the police in the matter.
On Tuesday, Mumbai Police nabbed Indrani Mukherjea on charges of killing Sheena Bora in 2012 and disposing off her body in Raigad, adjacent to Mumbai.
Besides Indrani Mukherjea, her driver has also been arrested in the case, but Indrani is believed to be main conspirator in the murder.
She was produced before a court which sent her to police custody till August 31.
Police claim to have recovered evidence from the spot where the victim's body was buried in Raigad, and further investigations are underway.
(With inputs from agencies)