RAB's dog squad searches the ground at Dhaka's Central Shaheed Minar on Monday, the day before International Mother Language Day. Photo: asaduzzaman pramanikThe RAB uses its dog squad to search the Central Shaheed Minar on Monday, before crowds descend on the memorial for International Mother Language Day. Photo: asaduzzaman pramanikRAB's dog squad searches the ground at Dhaka's Central Shaheed Minar on Monday, the day before International Mother Language Day. Photo: asaduzzaman pramanikRAB's dog squad searches the ground at Dhaka's Central Shaheed Minar on Monday, the day before International Mother Language Day. Photo: asaduzzaman pramanikRAB's dog squad searches the ground at Dhaka's Central Shaheed Minar on Monday, the day before International Mother Language Day. Photo: asaduzzaman pramanikThe RAB uses its dog squad to search the Central Shaheed Minar on Monday, before crowds descend on the memorial for International Mother Language Day. Photo: asaduzzaman pramanikA RAB bomb disposal unit secures Dhaka's Central Shaheed Minar on Monday, a day before people gather around the memorial to observe International Mother Language Day. Photo: asaduzzaman pramanikA RAB bomb disposal unit secures Dhaka's Central Shaheed Minar on Monday, a day before people gather around the memorial to observe International Mother Language Day. Photo: asaduzzaman pramanikA RAB bomb disposal unit secures Dhaka's Central Shaheed Minar on Monday, a day before people gather around the memorial to observe International Mother Language Day. Photo: asaduzzaman pramanikRAB Director General Benazir Ahmed briefs the press at Dhaka's Central Shaheed Minar on security arrangements for International Mother Language Day. Photo: asaduzzaman pramanikThe RAB uses its dog squad to search the Central Shaheed Minar on Monday, before crowds descend on the memorial for International Mother Language Day. Photo: asaduzzaman pramanikThe RAB uses its dog squad to search the Central Shaheed Minar on Monday, before crowds descend on the memorial for International Mother Language Day. Photo: asaduzzaman pramanikThe RAB uses its dog squad to search the Central Shaheed Minar on Monday, before crowds descend on the memorial for International Mother Language Day. Photo: asaduzzaman pramanikA RAB bomb disposal unit secures Dhaka's Central Shaheed Minar on Monday, a day before people gather around the memorial to observe International Mother Language Day. Photo: asaduzzaman pramanikRAB Director General Benazir Ahmed briefs the press at Dhaka's Central Shaheed Minar on security arrangements for International Mother Language Day. Photo: asaduzzaman pramanik