The NIA special court convicted Bhatkal and others under various sections of Indian Penal Code, Arms Act, Unlawful Activities (Prevention) Act (UAPA).
Besides Bhatkal, the others convicted were Asadullah Akthar of Uttar Pradesh, Zia-ur-Rahman alias Waqas of Pakistan, Tahseen Akhthar of Bihar and Aizaz Shaik of Maharashtra. All of them are in judicial custody.
The alleged key conspirator Riyaz Bhatkal, believed to be operating from Karachi, is still at large.
The final arguments in the case concerning the attack, carried out on February 21, 2013 in which 18 people were killed and 131 injured others, concluded last month during which 157 witnesses were examined. Trial in the case had begun on August 24 last year.
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An elated Director General of NIA Sharad Kumar said "it was a wonderful investigation carried out by the team in which every evidence was examined minutely. This is the first ever conviction of Indian Mujahideen cadres."
"We will be appealing for maximum punishment for the culprits," Kumar said.
After receiving the materials sent by Riyaz through an
unknown person, and the money sent by him by way of hawala and other channels, Asadullah Akhtar and Waqas reached Hyderabad and started working with Tahseen Akhthar alias Monu, who had already reached there and was living in a hideout in Abdullapurmet area, the NIA probe report claimed.
The NIA investigation has brought to evidence all the financial help received by the accused from abroad.
The NIA also said it learnt that the miscreants, after procuring the explosive materials to Hyderabad, had conducted a test blast in a hillock near Abdullapurmet in Hyderabad.
The role of Yasin Bhatkal in the planning, procurement of explosives and harbouring of Asadullah Akhthar after the incident, was also unearthed by the NIA, the agency said.
(Reopens DEL31)
"The court will decide on Monday (December 19) what punishment is to be inflicted on this crime. Anyway, we will be seeking for maximum punishment that is prescribed for murder and waging war against India, that is death sentence," Special Public Prosecutor Surender told reporters outside Charlapally Central Prison here where the court is located.
"This is for committing murder, attempt to murder, criminally conspiring to wage war against the Government of India and committing a terrorist act and at the same time collecting arms for the purpose of committing this terrorist act," he said.
The court has posted the case to December 19 to decide the quantum of sentence to be handed out to them, he said.
"Now, that they have been found guilty, the court has posted the case to 19th (December). On 19th, the court will hear about the quantum of sentence to be imposed," he said.
"During course of investigation, the role of key founding member of IM, Mohammad Riyaz alias Riyaz Bhatkal, hailing from Bhatkal, Karnataka, now suspected to be hiding in Pakistan, was established, as the key planning and guiding force behind the blasts and he was arraigned as an accused in the crime," the NIA said in a release.
"He is absconding and NIA has issued a Interpol Red Corner Notice for his arrest," it further said.