The incident was captured Conquering on the police station 's closed-circuit television ( CCTV ) cameras .

Experts regarded Perception_active the bomb Attack to be designed Create_artwork to look spectacular on CCTV for the purposes of 'armed propaganda ' rather than to cause Causation large numbers of injuries Bodily_harm .

Footage of the explosion Attack was captured Conquering by two CCTV cameras inside the station Placing and one outside .

On Friday 22 July , CCTV images of four suspects wanted in connection with the bombings Attack were released Releasing .