NEW DELHI: The Cabinet Committee on Economic Affairs on Thursday approved a new Central scheme for providing special infrastructure in States affected by Left-wing extremism. Prime Minister Manmohan Singh presided. The Rs. 500-crore scheme will be launched during the 11th Plan. For the current financial year, Rs.100 crore has been earmarked, an official spokesperson said. The aim is to provide adequate infrastructure critical to policing and security needs on the field. Over 70 districts in about a dozen States are affected by Left-wing extremism, which the Prime Minister has described as the biggest challenge to internal security. The government has recently approved the formation of a 10,000-strong, special anti-naxal force