New Delhi, Jul 3: An 18-year-old man was arrested and three juveniles apprehended for allegedly stabbing a minor boy to death in outer Delhi's Mangolpuri area, police said on Saturday.

The major accused, Sachin alias Raja, is a resident of Mangolpuri and works at a shoe factory, they said.

The victim, aged 17, had allegedly used foul language against Sachin's cousin. To teach him a lesson, Sachin called his three juvenile friends and stabbed him to death, police said. Delhi Murder: 3 Minors Kill Man Over Rs 700 During Robbery Attempt, Arrested.

On June 30, when constable Sunil of Mangolpuri police station was on patrolling duty, he found a boy with stab injuries lying in an unconscious state near a park in the J Block area. With the help of a person, he shifted the boy to a nearby hospital where he was declared brought dead, the police said.

Deputy Commissioner of Police (Outer) Parvinder Singh said, "A case of murder was registered under section 302 of Indian Penal Code. Our police team scanned through 170 CCTV cameras, examined 230 persons and identified the accused and his three juvenile associates in the case." Sachin was arrested and his three juvenile associates apprehended, he said.

"When Sachin was interrogated, he disclosed that the victim used filthy language against his cousin sister, therefore, to teach him a lesson, he called his three juvenile friends and committed murder by stabbing him," Singh said.

Two blood-stained knives were recovered from them, police said, adding further investigation to recover clothes and other sources of weapon used in the commission of the crime is underway.