Fonseca’s wife and twins were found murdered in their rented flat at Palm Avenue on January 16.
The accused was admitted in a hospital at Park Circus as he had injury on his neck. Thus the police had failed to arrest him despite getting evidence that he had committed the crime.
Fonseca had claimed that his wife had killed their twins and subsequently attacked him. As a result he got injured. He had even claimed that he had killed his wife Jessica in self defence.
Police had initiated an investigation and interrogated several people in this connection. Police had, however, failed to take his statement as his doctors claimed him to be unwell.
Neil, who was found in the flat in a badly injured state, was undergoing treatment a nursing home here and was arrested after he was discharged, a senior police officer said.
Neil had tried to kill himself after allegedly murdering his wife and their twin sons Darren and Joshua - and was badly injured, the officer said.
Blood-soaked bodies of the three were found in the bedroom of the third floor apartment at the posh Palm Avenue with their throats slit and heads badly thrashed by heavy objects on the morning of January 16.
Jessica’s husband Neil was found lying with his throat half-slit in the same room and was rushed to the hospital.
Darren and Joshua were students of Class IX.
Neil was released from the hospital Tuesday night and was subsequently arrested.
He was remanded in the custody of the police till March 1 after being produced before the Alipore Court.
It may be mentioned that the investigating officers had interrogated a woman, who was well known to Fonseca, in connection with the murder. The woman had visited the accused’s house on the day of the incident.
Police had also came to know after speaking to some of the family members that Fonseca suspected of having affair with a woman and she was well aware about various aspects of Fonseka business of interior decoration.
A police officer said Fonseca also has a huge debt and failed to return money to many despite giving repeated assurances.
“If needed we may arrange face-to-face interrogation of Fonseca with another person, whose name cannot be revealed right at this moment for the sake of investigation. It would not be required if he narrates whatever had taken place that night and states the reason that led to the crime,” the officer said.