NEW DELHI: Naming one Abu Muhammed al-Bengali as its new emir in ‘Bengal’, an Islamic State affiliate group on Tuesday issued a direct threat to carry out strikes in India and Bangladesh .“If you think you have silenced the soldiers of the Khilafa in Bengal and Hind and you are certain about that then listen we men are never to be silenced.. And are thirst for revenge is never to be faded away (sic),” the IS poster released in Bengali, English and Hindi reads.The development comes just a day after Islamic State carried out a minor explosion near a cinema theatre in Dhaka. The minor blast took place near Gulistan theatre around 7.30pm on Monday. Though no casualties were reported as there was some problem with the bomb assembly, a few policemen did sustain injuries in the blast.The IS released a statement in Arabic in the early hours of Tuesday through its mouthpiece Amaq. Subsequently, it also released Bengali translation of its statement on the Dhaka attack along with transcript of Baghdadi's speech.The Indian intelligence is closely monitoring the developments in Bangladesh as they suspect that this incident could be a smokescreen and the real attack may still be coming either in Bangladesh or West Bengal.The quick unfolding of developments and spurt in circulation of IS-related material in Bengali language has rung alarm bells across agencies. Last Thursday, pro-IS Telegram channels had released a poster in Bengali saying "Coming soon", a development first reported by TOI.Dhaka Metropolitan Police chief Asaduzzaman Mia told the press on Tuesday that the The Counter Terrorism and Transnational Crime and DMP’s bomb disposal units were still investigating the incident. The improvised bomb that exploded in Gulistan on Monday was different from normal crude bombs, he added.Agencies had started a probe after the poster — which read: “Shighroi Aschhe (coming soon), Inshallah..” — came into circulation on Telegram. The poster flashed the logo of a group called al Mursalat and the Tuesday threat was issued by the same group.“It is serious.. IS has just managed to pull of serial blasts in Colombo through a local outfit called Tawheed Jamaat. Bangladesh already has a strong Islamic State presence with a section of the local terrorist organisation named Jamatul Mujahideen (New-JMB) being affiliated to the ISIS central,” an officer said.The threat to West Bengal cannot be ignored as JMB operatives have been known to frequent Kolkata and other parts of West Bengal and neighbouring states for recruitment and establishing hideouts, another anti-terror unit officer said.Read this story in Bengali