KATHMANDU, March 21 -- Four including a close aide to senior leader Hemanta Prakash Oli arrested on Tuesday

The government has stepped up measures to contain the activities of the outlawed Communist Party of Nepal (CPN) led by Netra Bikram Chanda 'Biplab'-a Maoist splinter group involved lately in various illegal activities including extortion and bombings in various parts of the country.

Nepal Police, the Armed Police Force and the National Investigation Department are working in coordination to arrest cadres of the Maoist splinter group . They are also out to seize the weapons the group is believed to have possessed since the time of the Maoist armed insurgency, senior police officials said.

Since the government decided on March 12 t...