london metropolitan police chief mr ian blair has confirmed that there have been three little incidents on the stations at green street , oval and shepherd ' s clock stations , and another slight explosion on a no . 26 bus on hackney walk in newington green . the british ambulance union has not found any injured people , but one person has presented themselves to a local hospitals . it is not yet known if this is connections with the bombs .
Police report there has been an explosion in the tube station.