In fresh trouble for the ruling Aam Aadmi Party, Delhi Police have booked party MLA from Delhi Cantonment Surinder Singh, his driver and an employee for allegedly abusing and beating up a worker of the NDMC on Tuesday evening. According to the police, the incident happened at around 6.30 pm, near the Race Course Road signal, where some NDMC employees were conducting routine checks. Singh, meanwhile, claimed that neither had he abused the NDMC worker, nor did his driver and employee assault him. He claimed that the NDMC workers were thrashing the vegetable vendor, and he had merely tried to stop them.