A middleman working with a vegetable trader in Madhya Pradesh was arrested on Monday for allegedly threatening to abduct the latter's family members and attempting to extort Rs 1 crore from him, police said. The accused worked as a middleman for trader Kallu Bagri at Devi Ahilyabai Holkar Fruit-Vegetable Market in Indore, deputy commissioner of police (DCP) Aditya Mishra told reporters.