The 'B summary' report, also known as discharge report, regarding the accused Nasir Rangrez was filed in the special court here last week.
Gujarat ATS had arrested Rangrez (38), an auto driver, from Belgaum on June 19 and handed him over to the crime branch of the city police.
"We have filed a final discharge report under section 169 of CrPC (no evidence found against accused) as we have not found any substantial evidence against Rangrez. He was in our custody for seven days," said Deputy Superintendent of Police Deepan Bhadran.
A warrant had been issued against him after another accused, Hafiz Adnan, told the investigators that Rangrez was present at a terror training camp allegedly organised by the Indian Mujahideen (IM) and the Students Islamic Movement of India (SIMI) in Waghamon forests in Kerala as a part of the blasts conspiracy.
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"However, other than Adnan's statement, we have not found any evidence (against Rangrez)," said Bhadran.
ATS had claimed that Rangrez was a member of SIMI and was a part of a larger conspiracy to spread terror in Gujarat to avenge the killings of Muslims in 2002 riots.