Gurugram, Sept. 18 -- Two brothers allegedly shot dead their father's killer in Kashipur village under the Sadar area of Palwal on Monday, nearly 20 years after the incident, police said on Tuesday. The accused siblings, identified as Dipanshu, 23, and Tushar, 21, allegedly carried out the revenge killing after repeated taunts from peers who mocked them as cowards for not avenging their father's death, officers said. The victim, Bijender Singh, 60, was attacked while returning home from his fields. Investigators said he sustained six bullet injuries, including two fired at his genitalia. Sadar Palwal deputy superintendent of police (DSP) Narender Khatana said the attack followed a spat three days earlier. "Bijender had made an adverse comment that they can't even touch him. This became the tipping point following which the duo, along with 16 associates, first shot dead Bijender near his field and then shot his son Sachin after reaching his home. However, he managed to survive," Khatana said. Police said Bijender was sentenced to life imprisonment in 2011, along with two others, for killing Pappu Singh, father of Dipanshu and Tushar, during clashes in the 2005 panchayat elections. According to officers, aware of the case, Bijender was currently out on bail granted by the Punjab and Haryana High Court in 2018, before which he had challenged his sentence. Inspector Krishan Gopal, station house officer of Camp police station, said the siblings were very young at the time of their father's death. "Tushar was barely one and a half months old, and Dipanshu was around three years old. Their mother had abandoned them, and it was the grandparents who had raised the two. They knew nothing about their father's murder, but frequent teasing from peers and gossips in the village had filled them with rage," he said. The brothers had recently sold parental land for Rs.80-85 lakh, using the funds to purchase a motorcycle and, allegedly, the weapons for the murder. They had reportedly disclosed their plan to surrender after the act. Four police teams are conducting raids in multiple states to apprehend the suspects, and armed personnel have been deployed in the village. Following the killing, angry locals and Singh's family blocked NH-19 with the body and protested at the civil hospital, delaying the autopsy by over 36 hours, officers added. A murder case has been registered against the two brothers and 16 associates based on a complaint from Bijender's wife, Shyamwati, police said....