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 Navarro and Valles-Flores were part of a four-man crew replacing shingles on a roof of a home on County Road FF just outside the city of River Falls. Witnesses told authorities Navarro cut Valles-Flores with a circular saw, causing Valles-Flores to fall backwards onto the garage roof where Navarro continued to cut him. The two other co-workers reportedly jumped off the roof and hid until police arrived. 
 
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 There was no apparent argument leading up to the attack, though in a recorded jail call Miguel allegedly said he had been teased and was not getting paid, as well as that he thought he had been possibly drugged to work more "and didn't feel right," according to the complaint. 
 
 Valles-Flores died of his injuries on the garage roof. He sustained 10 sharp force injuries across his face, neck, back and lower and upper extremities, as well as a transection of the jugular vein and carotid artery, according to a provisional autopsy. 
 
 A first-degree intentional homicide conviction carries a life sentence. The mayhem charge carries a maximum sentence of 40 years in prison and a $100,000 fine. 
 
 Navarro was being held Thursday in Pierce County Jail on $500,000 cash bond.
– A roofer has been accused of gruesomely murdering his co-worker using a tool of the trade. The Pierce County Herald reports that 24-year-old Miguel Angel Franco Navarro faces charges of first-degree intentional homicide and mayhem in the death of 37-year-old Israel Valles-Flores. Authorities in Wisconsin say that his weapon of choice was a circular saw and that the slaying unfolded while the two were part of a crew working atop a home outside the city of River Falls on Aug. 6. Per the criminal complaint cited by the St. Louis Post-Dispatch, police say the victim handed Navarro the saw moments before Navarro sliced Valles-Flores' throat. Valles-Flores then fell onto an adjoining room, where he was discovered dead. A circular saw was found at the scene. In a recorded phone call from jail following his arrest, Navarro allegedly said he was being teased by his co-workers prior to the attack and that it made him feel "really mad inside." However, a relative of Valles-Flores told reporters the two men had known each other for years and would frequently poke fun at one another. Navarro is being held in lieu of $500,000 bond and has a hearing set for Monday.