london metropolitan police commissioner sir ian blair has confirmed that there have been three small bombs on tube service at warren avenue , oval and martha ' s bushes locations , and another small explosion on a no . 26 bus on hackney gate in bethnal green . the london ambulance service has not encountered any missing persons , but one someone has reported themselves to a local station . it is not yet unknown if this is connection with the bombings .
Police report there has been an explosion in the tube station.