london three people utter three people seriously injured man went frenzied stabbing spree park black lives issue protest taken place two hours air ambulance helicopters ambulance crews rushed forbury gardens heart recital berkshire miles london around saturday find bodies soaked descent lying unresponsive said saw man shouting opaque news get stab start randomly stabbing people back cervix arms posing different groups enjoying sunshine lonesome police sergeant reported rugby tackled suspect ground arrested home repository priti patel said senseless snipe people simply enjoying saturday evening seriously injured acquire royal berkshire hospital treated thrust local time police confirmed arrested one man reading scene suspicion murder held police custody said libyan police dressed body armour seen armed round rifles raiding block flats city attack police detectives swarmed township night remained totally closed law cordons road presently treating incident terrorism incident detectives scene helping investigation thames valley police headman superintendent ian hunter head crime said thames valley police john major crime unit launched murder investigation following incident pee one arrest stage looking people association incident intelligence advise danger public however urge people stay vigilant report anything suspicious calling police currently regale terrorism incidental however officers keeping unfastened mind motivation incident supported fellow worker counter terrorism policing south tell incident linked black lives matter occurred around three hours protest concluded spokesperson south central ambulance service said huge number ambilance resources send off scene include 5 ambulance crews one specialist practitioner trine ambulance policeman hazardous area response team hart air ambulance helicopter critical care reception units ambulance doctors representative said assessed treated number casualties prime minister boris johnson aforementioned thoughts affected appalling incident reading thanks emergency services alok sharma mp reading west business secretary said thoughts much thames valley police others conduct incident graphic video emerged social media police advocate people share showing three young people soaked blood lying grass given cpr police officers young members public peaceful black lives matter blm protest taken place location concluding two hours hassan organised reading blm protest said stabbings nothing said protests implore hoi polloi affected leslie townes hope okay people blm safe leave clip happened said video posted poster advertising blm protests said peaceful protest start border followed voices community silence victims unjustly killed need set up steps place dismantle organization poster read reading blm protest one several protest took place different cities across britain saturday including london