Indian Mujahideen's Pakistan-basedfounder Riyaz Bhatkal had suggested adopting tactics used inthe 2013 Maoist strike in Chhattisgarh on Congress leaders foreliminating politicians, the NIA has told a Delhi court.

The National Investigation Agency said this in itssupplementary charge sheet filed before a special court which today took cognisance of the final report filed against 20suspected IM men and fixed the case for hearing on November 3.        "Accused A-10 (Riyaz Bhatkal who is absconding) has clearly stated about his wish of repeating blasts in Mumbai to teach a lesson to police. Investigation has established that accused A-10 appreciated Maoist act of killing Congress leaders and postulated that IM should also do such activity like killing political leaders," NIA said in the charge sheet.

Maoists had last year attacked the Congress cavalcade in Chhattisgarh in which 27 people, including the party's top leaders, were killed.

The charge sheet further said that absconding IM member Mirza Shadab Beg had "allied" with top terror group al Qaedafor exploring the availability of fidayeen attack in India.

"The accused A-16 (Beg) allied with the al Qaeda and was exploring the availability of fidayeen i.e. suicide attacker from the al Qaeda for terrorist act in India. The accused formed a sub-group of IM operatives which allied with other absconding jihadi terrorists from different states of India who had taken shelter in Pakistan, for the furtherance of terrorist activities within India," it said.