Ka taƙaita labarin:  (CNN) Labari mara kyau ga Rio de Janeiro gabanin wasannin Olympics na 2016 ya ci gaba da zuwa bayan yawan kifi da ya mutu ya bayyana a cikin lagoon Rodrigo de Freitas. Tare da sama da shekara guda da za a yi kafin birnin ya karbi bakuncin wasannin motsa jiki na motsa jiki da tseren jirgin ruwa, jami'ai tare da majalisar dokoki na Rio de Janeiro a ranar Litinin sun kaddamar da bincike kan abubuwan da ke haifar da mutuwar duka a cikin lagoon da sauran tafkuna da bays a jihar inda wannan abin ya faru. Kungiyar za ta yi aiki tare da Cibiyar Kula da Muhalli ta Jihar (INEA) da kuma Sakatariyar Jihar don Muhalli. Jami'ai sun kare imanin cewa ruwan sama na baya-bayan nan ya haifar da canjin zafin jiki na ruwa da kuma wuce haddi na abubuwa masu lalacewa, wanda zai haifar da baƙar fata na oxygen, yana kashe kifin. Sanarwar da jami'an suka fitar ta nuna cewa yawan kifin da ya mutu ya haifar da wari da rashin jin daɗi ga waɗanda ke zaune kusa da tafkin da duk masu yawon buɗe ido da ke zuwa yankin. A makon da ya gabata, sabon bidiyon da aka samu daga jaridar O Globo ya nuna wani ma'aikacin jirgin ruwa ya yi karo da kwandon shara da ke iyo a Guanabara Bay. Lamarin ya faru ne a ranar 14 ga Fabrairu kuma ya shafi masu sana'ar jirgin ruwa Breno Osthoff, mai shekaru 20, da Rafael de Almeida Sampaio, mai shekaru 35. A cewar Osthoff, tasirin ya kasance mai girma cewa jirgin ruwan ya tilasta shi a gefensa. Rio de Janeiro ta yi alƙawarin rage gurɓataccen yanayi a cikin sanannen ƙazamar ƙazanta, amma a watan da ya gabata a wata hira da babbar tashar wasanni ta ƙasar SporTV, magajin gari Eduardo Paes ya yarda cewa bay zai kasance mafi yawan gurɓataccen yanayi don wasannin. "Wasannin Olympics kuma suna cikin lokacin da ake samun karancin ruwan sama, to wannan adadin tarkacen da ya fito daga kananan hukumomi biyar a yankin birni, tare da rashin tsafta, shima ana iya sarrafa shi... Ba na ganin matsala ga wasannin Olympics, "in ji Paes. A shekarar da ta gabata masana kimiyyar halittu sun ce koguna da ke shiga cikin kogin sun ƙunshi wani ƙwayoyin cuta wanda ke da tsayayya ga maganin rigakafi kuma zai iya haifar da cututtukan fitsari, gastrointestinal da na huhu. Hasashen wasannin Olympics na 2016.
Jami'ai sun fara tsabtace tarin kifi da suka mutu daga Lagoon Rodrigo de Freitas. Gurbatawa ta kasance matsala tun kafin a fara shirye-shiryen wasannin Olympics. Bidiyon makon da ya gabata ya nuna wani abin da ya faru daban, inda shara mai iyo ya haifar da hadarin jirgin ruwa.