According to the officer, the accused has confessed to the killings and said that he had an affair with the teacher's wife for 18 months which went sour later, leading to him shooting the family.
A government school teacher, his wife and two daughters were allegedly shot dead at their rented accommodation on Thursday, over a month after the family lodged a first information report (FIR) against a man saying he would be responsible if something untoward happened to them, police said.