Yan sanda a Amirka sun ce sun yi nasarar kama mutumin da ya bude wuta kan jama'a a lokacin da ake tsakiyar faretin bikin ranar samun 'yancin kai a wani yanki na birnin Chicago. Mutum akalla shida ya hallaka baya ga wasu fiye da talatin da ya raunata.
'Yan sanda sun ce, maharin wani matashi ne mai shekaru ashirin da biyu da haihuwa, kuma ya mika wuya ba tare da wata matsala ba, bayan da aka kwashi sa'o'i ana farautarsa. Harin da aka kai a lokacin bikin da aka saba yi a duk ranar hudu ga watan Yuli na kowacce shekara, ya sanya Amirkawa shiga yanayi na dimuwa.