There is nothing on NHK News about any new fire.
Fire breaks out again at Fukushima’s No. 4 reactor: TEPCO
TOKYO, March 16, Kyodo
A fire broke out again early Wednesday at the troubled No. 4 reactor of the quake-hit Fukushima No. 1 nuclear power plant, Tokyo Electric Power Co. said.
Around 5:45 a.m., a worker at the plant saw flames on the fourth floor of the reactor’s building, believed to be the same spot where an apparent hydrogen explosion caused a fire Tuesday morning in the wake of last Friday’s magnitude 9.0 earthquake.
The plant operator said it has reported the incident to firefighters and local governments.
On Tuesday, the utility said water in a pool storing spent nuclear fuel rods at the reactor may be boiling and its level has dropped, exposing the rods, prompting the government to order Tokyo Electric to inject water into the pool ‘’as soon as possible to avert a major nuclear disaster.’’
Unless the spent fuel rods are cooled down, they could be damaged and emit radioactive substances.
==Kyodo
http://english.kyodonews.jp/news/2011/03/78383.html