Mexican officials say eight people were killed in gunbattles in the Sinaloa state capital of Culiacan in what is being described as a failed operation to detain the son of convicted Sinaloa cartel boss Joaquín "El Chapo" Guzmán. 

Federal security officials said in a news conference Friday that those killed include one civilian, one member of the National Guard, one prisoner and five attackers. 

Officials said late Thursday that troops had come under fire from a house while on patrol and found Ovidio Guzmán López inside. But on Friday they said that it was an operation specifically intended to arrest him on a warrant issued by a judge for extradition to the United States. 

Officials say they pulled back when heavily armed cartel gunmen unleashed torrents of gunfire across the city.

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Ovidio Guzmán was indicted in 2018 by a federal grand jury for the alleged trafficking of cocaine, methamphetamine and marijuana, AP reported.