New Delhi, Sep 22 (ANI): After Samjwadi Party's General Secretary Mohan Singh passed away at AIIMS on Sunday after a prolonged illness, JD (U) President Sharad Yadav paid tribute from his side and his party's behalf and said that Singh was a very sober and balanced person and that his demise was a great loss. Singh was elected three times to the Lok Sabha from Deoria in Uttar Pradesh and was suffering from cancer for the past many days.