With this, six persons have been arrested in the case so far, City Police Commissioner Raghavendra Auradkar told reporters here.
"The two suspects, Valyal Hakeem and Asghar Ali were already in custody of Coimbatore police for alleged possession of explosives. During interrogation, their alleged involvement in the blast came to be known. They were produced before a local court in Coimbatore yesterday. We are seeking their body warrant to bring them to Bangalore," he said.