Additional District Judge Kishore Kumar held Veer Bahadur, Rajaram, Babban and Brij Koshore guilty yesterday and also imposed a fine of Rs 10,000 each on them.
The four had attacked villagers Bhola Singh, Chandrashekhar, Chandrabhan and Ramdev in March 1996 over an old rivalry in Harpur village.
One of the victim Bhola later succumbed to injuries.