Prime Minister's Advisor on ICT Sajeeb Wazed Joy has termed the BNP a party of terrorists.
Joy, who is also the son of the prime minister, posted a status on his Facebook page on Friday afternoon saying that the party should be brought to justice.
In the Facebook status, Joy said BNP had protected the killers of the August 15, 17 and 21 attacks.
"They [BNP] rewarded the killers of August 15th with indemnity and foreign postings. During their last term they protected the fundamentalist terrorists who conducted bomb attack after bomb attack, culminating in the August 17th attacks," he said.
Joy also said the planning meetings for the August 21st attack were conducted in the office of Khaleda Zia's son Tarique in presence of her political secretary.