The killings had led to the Muzaffarnagar riots in 2013.
The court also slapped a fine of Rs 2 lakh each on the accused. Eighty per cent of the fine would be given to the affected families.
When the lifer was handed out to the accused, the court was packed and heavy security deployment had been made by the local district administration.
Officials said that Sachin and his maternal brother Gaurav were lynched in Malikpura locality of Kawal on August 27, 2013, which triggered riots in western UP, leading to an unprecedented communal tension between the Jats and Muslims in the region. Sixty three people had lost their lives and more than 50,000 people had migrated to safer places.
Gaurav's father Ravindra had filed a police complaint against the seven accused, including Shahnawaz, who was also killed in the violence. The accused Mujassim, Muzammil, Furkan, Jehangir, Nadeem, Iqbal and Afzal have been convicted on charges of attacking to kill, threatening to murder and gathering against law and rules.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)