Biratnagar. Three more people have been arrested on charges of extorting illegal money from inmates of Morang Prison. Police had arrested the main accused Abhishek Giri yesterday.Police said that those arrested on Sunday include Shivachandra Yadav, an office assistant at the District Prison Morang, and three others. Those arrested also include Vijay Kamat, a vegetable supplier inside the prison, and Deepak Karki, an associate of Abhishek Giri.It has been revealed that Giri used to use those who supplied vegetables for the prison mess to take cash out from inside.