Additional District and Sessions Judge Bhola Nath Tiwari also imposed Rs 15,000 each on Sunil Kumar, Raju Kumar, Abhishek Kumar and Sanjay Sharma.
The judge, however, acquitted Atul's wife Shalini for lack of evidence.
Atul, a Samajwadi Party leader, was shot dead outside his residence at Dak Bungalow road here on June 8, 2013.
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