The Delhi Police on Saturday arrested a man, who allegedly killed his wife and three children inside a house in Mehrauli area of South Delhi.

Upendra Shukla allegedly used a grinder stone cutting machine to kill his wife and two children, and strangulated one of his son's to death.

The gruesome murder came to light when the mother of the accused, who lives in the same house, knocked on the door of his room. After repeated attempts when the door did not open, she called the neighbours who broke in to find the bodies lying in a pool of blood. The neighbours then informed the police. 

"The accused has been arrested. He is said to be under depression, but only medical reports will clear the situation," said Vijay Kumar, Deputy Commissioner of Police, South Delhi.

"Shukla is a teacher. We found a note on him saying that he had murdered his family but it gave no reason for the crime," Kumar added. IANS