london metropolitan police inspector sir ian blair has determined that there have been three minor explosions on tube trains at warren street , oval and shepherd ' s s stops , and one smaller explosion on a no . 26 coach on ham drive in newham green . the london ambulance corps has not reported any injured victims , but one person has reported themselves to a district hospital . it is not yet known if this is affiliated with the blasts .
Police report there has been an explosion in the tube station.