Fifth Test security stepped up after Fathers4Justice threat The threat comes two months after one of Britain's most famous paintings, The Hay Wain, by John Constable, was attacked by a Fathers4Justice protester in the National Gallery. The protestor was arrested after sticking a photograph of a young boy to the 1821 painting and there was no lasting damage. Cricket spectators said the raised security was immediately noticeable after the tip was received on Wednesday. In the wake of the threat, organisers said they would double overnight security of the wicket and place additional police and stewards on the boundaries. Spectators will face stricter checks entering the ground for the rest of the match. Detectives are also investigating the threat. Fathers4Justice has waged a long running and controversial campaign for improved rights for men denied access to their children. A spokesman for the England and Wales Cricket Board declined to comment.