Additional Judge Chandra Bhushan Singh held one Dayaram Lodhi and 20 others guilty yesterday and also imposed a fine of Rs 50,000 on each of them.
According to the prosecution, in April 1991 Lodhi was beating his wife to which Kannauji Lal Dhobi had objected.
When Lodhi continued the act, Dhobi called the police. Lodhi along with his associates attacked the police party, which fled from the spot.
Later, Lodhi and his associates killed Dhobi and his wife Kaushalya Devi.