In a horrifying incident, a man killed a 17-year-old girl and injured her mother when they allegedly stopped him from urinating outside their house in Delhi.

The incident occurred at around 10 p.m. on Wednesday when the girl's mother noticed that the man, apparently a former tenant, was peeing outside their house in the Hazrat Nizamuddin area of south Delhi.

"The incident was reported late Wednesday evening at E-Block in Hazrat Nizamuddin of south Delhi," IANS quoted a police officer saying.

The girl has been identified as Binno, a class XI student, and the accused as Javed.

Binno and her mother, Sadmani, were inside the house when Javed came and started to urinate in front of the gate. Sadmani tried to stop Javed from doing so, following which an argument ensued between the two.

"When Sadmani tried to prevent him from the act, the accused allegedly started abusing her. Hearing the commotion, Binno also came outside the house," the officer said.

Javed left the place threatening the two with dire consequences. He came back few minutes later and opened fire at Binno and Sadmani with his pistol, the police said.

While Binno sustained two bullet injuries in her abdomen, her mother received one shot. Both of them were immediately rushed to All India Institute of Medical Sciences (AIIMS) where Binno was announced brought dead and her mother is in critical condition.

After the incident Javed fled from the spot. The police have registered a case of murder against him at the Nizamuddin police station.

"We have registered a case and have launched a hunt for Javed," Additional Commissioner of Police Ajay Chaudhary told IANS.