BARTOW, Fla. (AP) Authorities in central Florida have a man in custody they say stabbed a friend to death and then drank his blood. Mauricio Mendez Lopez is accused of killing Macario Cruz in a house they shared in Bartow. Police said they believe Lopez stabbed Cruz to death because he was having an affair with his sister-in-law, Mariella Mendez. Lopez is the uncle of Mendez and Cruzs wife. A police report shows the men had an argument in which Lopez struck Cruz in the face with a 15-pound dumb bell. He then allegedly threatened to kill them both unless the relationship ended. Lopez was taken into custody late Wednesday and is in the Polk County Jail with no bond. According to several published reports all of the adults in the home are illegal immigrants.