12:00 p.m.: British Prime Minister Tony Blair says the "barbaric" London blasts are terrorist attacks and were designed to coincide with the G8 summit in Scotland. He will return to London.

11:35 a.m.: London police chief said there are "indications of explosives" at one of the blast sites.

11:15 Police say there were at least six explosions in London.

11:15 European Union commissioner for justice and security affairs Franco Frattini tells reporters in Rome that the blasts in London are terrorist attacks.

11:10 Police say they have reports of two deaths and nine injuries at Aldgate East subway station.

11:07 All bus services have been suspended in London, news agencies report.

10.57 British Prime Minister Tony Blair will stay at the G8 summit in Scotland but says he will speak at midday.

10:47 Home Secretary Charles Clarke says multiple London blasts cause "terrible injuries."

10:46 Police report serious casualties in London explosions, but no deaths confirmed.

10:46 Witness to Britain's Sky News says second blast heard in Russell Square.

10:45 Police sources say a bomb is suspected in London bus explosion.

10:33 Police confirm at least three explosions on buses in central London.

10:25 Police confirm explosion on bus in central London in the area around Russell Square.

10:24 Scotland Yard says "multiple explosions" rock London.

10:14 News agencies report a bus has exploded in central London.

10:02 Scotland Yard says it is dealing with a "major incident."

09:53 Metronet says the entire London subway network has been shut down.

Police says incidents are reported at the Aldgate station near the Liverpool Street railway terminal, Edgware Road and King's Cross in north London, Old Street in the financial district and Russell Square in central London, near the British Museum.

09:41 London Underground reports a second explosion at a subway station in northwest London.

09:33 Witnesses say London Underground says services are suspended after "power surge."

09:27 Metronet, the subway maintenance company, says power surge has caused explosion in London tube station.

09:25 Police say "there are walking wounded" in London's financial district.

09:15 British Transport Police say a explosion is reported in London's financial district in the area near Liverpool railway station.