The chief minister said certain "leads" have been found which are being pursued aggressively and assured that culprits would soon be arrested. The chief minister has also announced a reward of Rs 50 lakh for anyone providing information on those involved in the blast.
"Protests happen at Ramlila ground, then why should we go to Nirankari Bhawan, a private facility? We will stay put here today," Bharatiya Kisan Union spokesperson Rakesh Tikait said.
The other deceased were Sandeep Singh, a resident of village Rajasansi, and Kuldeep Singh.
Pakistan's Inter-Services Intelligence is quite active in fomenting trouble in Punjab and the grenade attack in Amritsar was a pure act of terrorism, Singh said.
Police have already arrested Bikramjit Singh, an operative of militant organisation Khalistan Liberation Force who was allegedly driving the motorcycle on that day.
Punjab CM Amarinder Singh said that the 'possibility of involvement of ISI-backed Khalistani/Kashmiri terror groups can't be ruled out'.
It said the prime minister of Pakistan has neither chosen to condemn the heinous act nor condoled with the bereaved families.