Top official says meltdown likely under way at a SECOND nuclear reactor

Chief Cabinet Secretary Yukio Edano said a partial meltdown in the unit is “highly possible”

Explosion at Fukushima could only have been caused by a meltdown of reactor core: Government Agency

The Nuclear and Industrial Safety Agency (NISA) said Saturday afternoon the explosion at the Fukushima No. 1 nuclear plant could only have been caused by a meltdown of the reactor core. NISA is affiliated with the Ministry of Economy, Trade and Industry.

TEPCO informs government of “emergency situation” at Fukushima Daiichi after radiation levels rise

ANOTHER REACTOR: Power company says “All the functions to keep cooling water levels in No. 3 reactor have failed”

“An emergency report on the plant’s condition has been filed with the government”

CNN reporting a meltdown may be underway at Fukushima

6.4 earthquake hits Fukushima nuclear plant

Aftershock Hits Nuclear Blast Plant, Sky News Online, March 12, 2011 at 8:50 am EST

Reuters: Government doubles evacuation zone radius to 20 km

Reuters @ 5:07 am EST: Evacuation radius at Fukushima nuclear plant has been increased to 20 km

WATCH: Shock wave visible during explosion at Japan nuclear plant (VIDEO)

Shock wave at :47 in

Japanese TV showing walls at power plant have crumbled

“Not clear if the damaged building housed the reactor which officials fear is facing a possible meltdown”

Explosion heard at Japan nuclear plant — “High possibility of meltdown” for reactor No. 1: Government

“FLASH: Explosion heard at TEPCO’s Fukushima Daiichi plant around 0630 GMT – media” — Reuters, March 12, 2011 at 12:00 am EST