Tags on the rocks read "TSK," short for Too Sick Krew, an offshoot of another gang. They have been embroiled in a four-year war with rival gang TCK, or Thugs Causing Kaos, that has been blamed for homicides, drugs and stolen vehicles.
Gang tags were spray-painted on at least eight large basalt boulders at the edge of the Petroglyph National Monument but none of the ancient petroglyphs was damaged, the monument's superintendent says.
The silver metallic paint had been removed from all but three boulders at the top of a ridge by Tuesday, and monument Superintendent Joseph Sanchez said the cleanup should be completed by Thursday at the latest.
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