Kolkata: A minor blast Monday outside a temporary office of the National Investigation Agency (NIA), which is probing the sensational Burdwan blast case, created panic in the Salt Lake area and sent the security establishment into a tizzy.

The low impact blast, that occurred Monday evening near a bus stand outside a Central Reserve Police Force camp that also houses the temporary office of the NIA in the satellite township, did not cause harm to anybody. But a part of the bus stand was damaged.