More churches, schools closed as armed group continues crackdown on Christian community begun earlier this month.
Religious leaders detained as group orders all churches built after 1992 to be destroyed.
Former Communist Party of Burma was a devout Buddhist who fought alongside members of many ethnic armed groups for several decades.
Group says event will both commemorate 30th anniversary of ceasefire and demonstrate its continued military strength.
Secretary of Peace Commission says agency will visit northeast of country to discuss ethnic group’s reservations.