"Shighroi aschhe, Insha'Allah (coming soon by the grace of Allah)!" screams an ISIS poster released recently on a Telegram channel of the Islamic State.

In the aftermath of the serial bomb blasts in Sri Lanka on April 21, another terror attack has been planned possibly by pro-Islamic groups in West Bengal or Bangladesh.

This poster, carrying the logo of al Mursalat — terror outfit named after the 77th sura or chapter of the Qur'an, meaning "the emissaries" — was released Thursday night. The outfit sprouted out of ISIS.

Due to the recent Easter Day terror attack on Sri Lanka by ISIS-affiliated Tawheed Jamaat, the intelligence agencies are taking the content of this poster very seriously.