Arsenal and England forward Theo Walcott has suffered an anterior cruciate ligament injury to his left knee and will be out for six months. It means he will miss the rest of the season and the World Cup.
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The 52-year-old had previous convictions for violence but was not on the anti-terror watchlist.
In a statement Charlton Athletic said: Keith was a true hero who will be greatly missed by all the Charlton family and everyone at the club.
London and the worlds has united on Twitter in defiance of the West minster attack #prayforlondon #wearenotafraid