The team seized some explosives, including gelatin sticks, from two places in and around the city during searches conducted at the houses of some of the accused, police said.
They refused to provide further details as investigation was being carried out by Karnataka police.
The Karnataka team has brought one accused, arrested in connection with the blast that left 17 persons injured, as part of the investigations.
In all, six persons have been arrested here in connection with the blast.
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