The pre-inquest review into the death of Alexander Litvinenko will begin today to decide the parameters for the inquest itself.
It is believed Mr Litvinenko, 43, was poisoned with polonium-210 after having tea with two Russians at a London hotel in 2006, but many questions remain unanswered.
The review will decide how many witnesses there will be, how to disclose the details of Scotland Yard's investigation and whether there will be a website for the public to follow the inquest.
More top news
Jessica Bamford's parents rushed her to hospital after a 'white hard substance' formed around her mouth but luckily she did not swallow it.
Nine in 10 emergency services personnel have experienced stress, low mood and poor mental health, according to a recent survey.
An ancient ocean on the surface of Mars held more liquid water than the Earth's Arctic Ocean, scientists believe.