"The attack took place in spite of the fact that the government was cautioned about its possibility. Despite warnings, the UPA government failed to build any diplomatic pressure on Pakistan," BJP state chief Kanwal Sharma said.
He also alleged that the attack on Sarabjit was part of a deep-rooted conspiracy.
Sarabjit, who was lodged in Kot Lakhpat Jail, is battling for life at a Lahore hospital after sustaining grievous injuries in an attack by co-prisoners on April 26.
He extended his party's support to Sarabjit's family in this hour of crisis.