Our thoughts remain with the families of those who lost their lives in this incident and it is a matter of deep regret that the perpetrators of these appalling murders have not been brought to justice. We believe that the circumstances in which they took place have been as fully investigated. It would be inappropriate to comment further, ahead of any forthcoming legal proceedings.
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The road is expected to remain closed for several hours, and police are advising motorists to take alternative routes where possible.
More than 800 Shakespeare scholars from over 48 countries are gathering in Stratford Upon-Avon and London.
It comes as figures show there has been a rise in trespassing in the last three years across the West Midlands.