Shaji, a petty thief, was allegedly killed by his brother and buried near a well there with the help of his mother two-and-a-half years ago
Ever since Sanu disappeared from Alappuzha on March 21, he had switched off his mobile phone to hide his location from the cyber wing of the police.
The deceased have been identified as 10-year-old Vaidehi, Shivanand, 6, and their father Rugesh aged 36.
After the gruesome act, the woman herself informed the police about the crime, shocking relatives and neighbours.
The police said the incident occurred by 6.30 pm and they were alerted on Friday morning.
The duo allegedly resorted to murder because they disapproved of Haritha’s marriage to Aneesh, who was born into a lower caste and came from a poor financial background.
The police said Sunil, who was a drunkard had not been in good terms with his in-laws for the past few months.
The mother-son duo reportedly got into a verbal tussle on Thursday night when in a fit of rage, Shibu assaulted his 72-year-old mother killing her on the spot.
The relatives and friends of Aneesh have stated that Haritha's family were against the marriage since both belonged to different castes.
On September 18, 2001, Balakrishnan, a native of Kasargod was stabbed after being kidnapped for allegedly marrying a Muslim woman.