japan earthquake attack
The most powerful earthquake to hit Japan since records began has hit the country's north-east and triggered a devastating tsunami.
Japanese TV showed cars, ships and buildings swept away by a vast wall of water after the 8.9-magnitude quake.
A state of emergency has been declared at a nuclear power plant but officials said there were no radiation leaks.
At least 40 people have been killed by the quake, which struck about 400km (250 miles) north-east of Tokyo.
The region has been rocked by a number of powerful aftershocks.
The tremor, measured at 8.9 by the US Geological Survey, hit at 1446 local time (0546 GMT) at a depth of about 24km.
A tsunami warning was extended across the Pacific to North and South America.
The Red Cross in Geneva warned that the tsunami waves could be higher than some Pacific islands, Reuters news agency said.
Coastal areas in the Philippines, Hawaii and other Pacific islands were evacuated ahead of the tsunami's expected arrival.
New Zealand later downgraded its alert to a marine threat, meaning strong and unusual currents were expected.