A man was due in court today accused of attacking the boss of an animal testing firm.
David Blenkinsop, 34, of no fixed address, is charged with causing grievous bodily harm to Brian Cass, managing director of Huntingdon Life Sciences in Cambridgeshire on February 22.
He was due to appear before Peterborough Magistrates Court.
Four people were arrested in connection with the attack.
A Cambridgeshire Police spokeswoman said: "The remaining three people have been released on bail pending further inquiries to return to a Cambridgeshire police station on July 6."
They are two men, aged 31 and 34, and a 29-year-old woman, all from Hastings.
Mr Cass, who is in his early 50s, suffered head injuries in the attack as he was making his way home in St Ives, Cambs.
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