NEW DELHI: India has reacted sharply over gruesome killing of blogger and liberal author Avijit Roy in Dhaka by suspected terror operatives and warned that such acts of extremism aided by groups like Jamaat-e-Islami (JeI) could further fuel terrorism in region, a day ahead of Foreign Secretary S Jaishankar's visit to Bangladesh.Delhi came down heavily on forces behind the murder of US-based author Roy last Thursday who was visiting Dhaka and suggested that Western countries including the USA take strong stand against such acts that contradict secular and liberal values that these countries stand for. "This act demonstrates what Bangladesh could witness if Jamaat-e-Islsmi ever returns to power there. It is therefore imperative upon the West to take strong stand against such forces beyond mere condemnation," a senior government official told ET.The United Nations , US State Department, UK and the European Union have condemned the murder of Roy who is the founder of Mukto-Mona (Free-mind) blog site which champions liberal secular writing in Bangladesh.The Federal Bureau of Investigation has contacted Avijit’s father Ajay Roy, a Dhaka University professor and has offered help with the investigations into the murder.Jaishankar who will be in Dhaka tomorrow as part of SAARC Yatra amid political turmoil in Bangladesh instigated by Opposition Bangladesh Nationalist Party (BNP) is likely to discuss issues of extremism and seek to deepen counter-terror cooperation with officials there.