Fukushima plant firm apologises for 'cover up'

The firm that ran the Fukushima nuclear plant has apologised for its "cover up" when it delayed disclosure of meltdowns at three reactors.

Tokyo Electric Power Company (TEPCO) president Naomi Hirose's apology followed the revelation last week that an investigation had found his predecessor instructed officials during the 2011 disaster to avoid using the word "meltdown".