BIRATNAGAR: Nepal Tarun Dal on Tuesday declared an indefinite chakka jam in Biratnagar, protesting the attack on Ashok Humagain, a Nepali Congress member by Youth Force cadres on Friday. Dipak Chapagain, vice-chairman, Biratnagar committee, NTD, said the chakka jam would stay until its four activists, who were held from Bargachhi, were released. — HNS