New Delhi, Sept 22 (ANI): Samjwadi Party's general secretary Mohan Singh passed away at AIIMS on Sunday after a prolonged illness. Singh, who was elected three times to the Lok Sabha from Deoria in Uttar Pradesh, was suffering from cancer for the past many days. Speaking to mediapersons in New Delhi, CPI leader Atul Anjaan said that Mohan Singh's demise is a big loss for Samjawadi Party.