Japan's most powerful earthquake since records began has struck the north-east coast, triggering a massive tsunami.

Cars, ships and buildings were swept away by a wall of water after the 8.9-magnitude quake, which struck about 400km (250 miles) north-east of Tokyo.
After a state of emergency was passed in the nuclear power plant, widespread disrupt is finally controlled when the officials finally declared that there is no radiation leaks.
The death toll is unclear, but police say 200 to 300 bodies have been found in the port city of Sendai.Many more people are unaccounted for.
The tremor, measured at 8.9 by the US Geological Survey, hit at 1446 local time (0546 GMT) at a depth of about 24km.
Coastal areas of Philippians and various other island countries were evacuated prior to the expected arrival of the wave. 
New Zealand downgraded its alert to a marine threat, meaning strong and unusual currents were expected.