Healthcare major Apollo Hospitals is understood to be planning to invest around Rs 100 crore to set up a mega health park at Chittoor district in Andhra Pradesh. According to sources, the project, to be spread over 86 acre of land, will be completed in three years. The health park will have a 200-bed multi speciality hospital and a nursing college. The company spokesperson could not be reached for comments. The source said within the next three to six months, the company is likely to start preliminary study of the location for setting up the park.