Prime Minister Sheikh Hasina on Sunday urged all to practise caution before a Covid-19 vaccine arrives amid the surging coronavirus pandemic. She made the call while addressing a discussion organised marking the National Mourning Day through videoconferencing from her official residence Ganobhaban. The Prime Minister said coronavirus has stalled the entire world. "Our government has taken all measures to face this situation. We kept providing assistance to the people. Allah tests people's patience during any danger. All have to help each other with patience, tolerance and sympathy.” Mentioning that the assassination of Father of the Nation Bangabandhu Sheikh Mujibur Rahman along with most of his family members had the similarity with the Karbala incident, she said the killers had dared to do that at the patronage of Ziaur Rahman. On the 10th of Muharram in the Hijri year of 61, Hazrat Imam, the grandson of Prophet Hazrat Muhammad (PBUH) along with his family members and 72 followers embraced the martyrdom in the hands of Yazid’s soldiers at the desert of Karbala to uphold the teachings of the Prophet (SM). On August 15 in 1975, nation’s founding father Bangabandhu Sheikh Mujibur Rahman and most of his family members were assassinated by a cabal of military men. Eighteen members of his family, including Bangamata Sheikh Fazilatunnesa Mujib, three sons – Captain Sheikh Kamal, Lieutenant Sheikh Jamal and 10-year-old Sheikh Russel, two daughters-in-law Sultana Kamal and Rosy Jamal, brother Sheikh Naser, peasant leader Abdur Rab Serniabat, youth leader Sheikh Fazlul Haq Moni and his wife Arzu Moni, Baby Serniabat, Sukanta Babu, Arif and Abdul Nayeem Khan Rintu were, among others, were killed on that fateful night. Bangabandhu's Military Secretary Brigadier General Jamil was also killed. Several members of a family in the capital's Mohammadpur area were killed by artillery shells fired by the killers on the same day. His two daughters – Sheikh Hasina, now the prime minister, and Sheikh Rehana – luckily survived the massacre as they were abroad at that time. The Prime Minister said women and children were not killed during the Karbala incident. "However, women and children were not spared on August 15, 1975.” An independent country had lost its potential through the killing of Bangabandhu, she said.