The accused, identified as Arun Chauhan, a taxi driver, has been arrested by the police.
Last night the couple had a heated argument. "Both of them went to bed normally. However, Chauhan woke up in night and smothered his wife Kavita (36) to death using the pillow," said a police officer.
In the morning, he told his children that he has killed their mother and that he too will now go to jail. He told his daughter that she should take care of her brother and take him to school and tuitions regularly in his absence.
Meanwhile, Chauhan called up Akash who was the nephew of his landlord around 7:30 AM on the pretext that his son had gone missing and he wanted his help to find him.
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"As Akash reached his home, Chauhan took him to the Ganda Nala nearby where he stabbed him over 11 times with a knife until he collapsed on the ground. He then fled from the crime scene," the official added.
The police, which had by that time reached Chauhan's house and was busy with investigation learnt about a body being found at Ganda Nala.
"We then tracked Chauhan through technical surveillance and arrested him. He has confessed to have committed the crime and claimed that he suspected his wife to be involved with Akash," he added.
Akash was recently selected for the post of Head Constable in Delhi Police's communications department.