SIMI was banned by the Indian Government in 2002 for its involvement in terror activities in India. However, in August 2008, a special tribunal lifted the ban on SIMI. The ban was subsequently reinstated by the Supreme Court of India on 6th August 2008
Fears exist in government circles that SIMI has been penetrated by Al-Qaeda. It is suspected that SIMI is now also operating under the name of Indian Mujahideen, an outfit that has taken responsibility for the 2008 Ahmedabad blasts, Jaipur blasts and 2008 Delhi blasts. Indian Mujahideen has taken responsibility of several terrorist acts in India and communicates with the Indian media under the pseudonyms of Al-Arbi and Al-Hindi.
Their ideology stands accused by certain watchdog organisations as diametrically opposed to all "un-Islamic" streams of thought, including Hinduism and a secular government as practiced in India. They are also against Western values . Among its various objectives, SIMI aims to counter what it believes is the increasing moral degeneration, sexual anarchy in Indian society and the ‘insensitiveness’ of a ‘decadent’ west. SIMI maintains that the concepts of secularism, democracy and nationalism, keystones of the Indian Constitution, are antithetical to Islam. They aim to restore the supremacy of Islam through the resurrection of the Khilafat, emphasis on the Muslim Ummah and the waging of Jihad .
After being banned, SIMI faced serious differences of opinion among its members about starting an armed struggle. SIMI President, Misbahul Islam along with the majority of SIMI members strongly opposes any armed conflict, believing such an approach to be against the interest of India and its citizens.
However, some members, driven by emotional issues such as the demolition of the Babri Masjid, Gujarat riots and India's growing friendship with the United States have advocated armed struggle against the government of India. According to some media sources this faction is led by the former general secretary of SIMI, Safdar Nagori. Nagori has denied responsibility for the recent bombings in Indian cities, although security agencies claim that they were carried by his group under his leadership.
SIMI organized violent protest against the demolition of the Babri Mosque, in the nationwide violence that followed the demolitions, SIMI activists clashed against police and the Sangh Parivar .
After the recent 11 July 2006 Mumbai train bombings, there have been 300 people detained as suspects in the attack. The police have said that most of the people that have been detained are part of SIMI. Activists of the organization have also been accused of being part of an earlier bombing in Mumbai in 2003 where 55 people were killed. Also in August 2008 a lot of attacks(in Ahmedabad(17 sequential bomb blasts in which 50 were killed and over 200 injured), Bangalore (9 sequential bomb blasts in which 8 were killed and over 47 injured), Surat(more then 30 live bombs and material for making bombs & detonators were found)) and Delhi (5 sequential bombs blasts in which 30 people were reported killed 4 live bombs were found) were considered as an act of SIMI.
Mulayam Singh Yadav, Former Chief Minister of Uttar Pradesh and Lalu Prasad Yadav, Amar Singh, Former Chief Minister of Bihar took back proceedings against SIMI and said that it was not a terrorist organization..
SIMI was banned for the third time on 08-02-2006. In fact, the second ban of SIMI dated 27-09-2003 came to an end on 27-09-2005. Therefore SIMI was in existence between 28th September, 2005 and 7th February, 2006 but it was unable to function in any manner because all its members were demoralized or had crossed the age of 30 years which automatically dis-entitled them to continue as a member of SIMI, as SIMI has an age limit of 30 years for membership and due to lack of offices and as all its accounts were frozen, some of the erstwhile members also had to fight the criminal cases foisted against them by the State.
However, on July 27 2006, a spokesperson of the Indian government told the Unlawful Activities (Prevention) Tribunal held in New Delhi that contrary to notions that SIMI's activities declined following its ban, the organization "had stepped up its subversive activities and was involved in almost all major explosions, communal violence and circulation of inflammatory material across the country.
The ban notification was issued by the Joint Secretary Home Ministry Mr. B.A. Coutinho. The ban notification and the background note stated that SIMI deserved to be banned for clandestine activities and links with 20 odd organizations through whom SIMI was allegedly operating. The background note clearly says that there was no violent incident in which SIMI was involved in the last 2 – 3 years.
To prove its case against SIMI, the government cited several cases under Unlawful Activities (Prevention) Act registered between 1998 – 2001.
The third ban on SIMI was lifted by Delhi High Court Tribunal on 5 August 2008. "Material given by the home ministry is insufficient, so ban cannot be continued,” Justice Geeta Mittal, a sitting Delhi High Court judge, said while lifting the ban.
•September 12: Five persons, including two SIMI activists, are arrested for the removal of railway sleeper
•July 21: POTA court in New Delhi sentences two SIMI activists to a five-year imprisonment under POTA for their membership of the proscribed organization and seven years imprisonment for sedition.
•July 16: A POTA Court in Delhi convicts two SIMI activists for their active involvement with the banned outfit.
•May 26: Mumbai Police arrest two suspected activists of the SIMI in the Ghatkopar bomb blast case and remand them to police custody till June 5.
•May 14: Mumbai Police arrest three persons from Padgah village and foil a plan that envisaged a series of explosions in Mumbai and Kerala, which was allegedly hatched by the SIMI and Lashkar-e-Toiba.
•June 11: All eight accused in the Ghatkopar blast case, allegedly cadres of the SIMI, are acquitted by a POTA court in Mumbai due to lack of evidence.
•March 8: Delhi Police arrests a SIMI member, Mohammad Iftikar Ehsan Malick, from Dehradun, the capital city of Uttarakhand.
•July 21: 3 men were arrested for the bombing in Mumbai, all three of them are part of SIMI.
•July 13: Mumbai Police arrested around 200 SIMI activists from different part of Mumbai.
•July 6: The Supreme Court rejects a plea by the Students Islamic Movement of India to lift the ban that the Government of India imposed on the organisation in 2001.
•July 1: The Uttar Pradesh government on 1 July withdrew a "treason" case against the banned SIMI president Dr Shahid Badr Falahi. The state government order 26-21-wc-7-Nyaya 5-2006/10wc10-14-wc-2004 ordered the withdrawal of the case. The document signed by district magistrate Bahraich and submitted in the designated court along with an application of the special prosecution officer, Bahraich. The Bahraich Kotwali police had arrested Shahid Badr along with seven others for allegedly making an inflammatory speech at Sir Syed Girls College in Bahraich in 2001. A case (no 532/01) was registered against him on charges of sedition, creating communal disharmony, inducement for armed struggle and hurting religious sentiments, under sections 124A 120B, 153A, 153B, 505 and 298 of IPC. But the concerned authorities failed to substantiate these claims.
•July 26: Just after a day of serial blasts at the IT hub of India, 17 serial blasts ripped the city of Ahmedabad in the western state of Gujarat, for which too the outlawed SIMI or the IM claimed responsibility. Via suicide bombing & targeting hospitals around 40-45 minutes after all other blasts in the city they maximised casualties.
•August 5: Delhi High Court Tribunal lifts ban on SIMI. The ban is subsequently stayed by the Supreme Court of India on 6th August 2008
•September 13: Group calling itself Indian Mujahideen(SIMI) claims responsibility of serial bomb blast in New Delhi. 30 people were killed in these blasts & more than 90 injured.