CNN Wire Staff
(CNN) - Secretary of State Hillary Clinton said Thursday the United States is "doing everything that we know how to do" to find the body of an American reported missing in a lake straddling the U.S.-Mexican border.
Clinton told ABC's "Good Morning America" that she is "sickened" by the case involving American David Hartley.
"I hope that we can [find him]," said Clinton. "I mean, the beheaded body of the brave Mexican investigator that just showed up shows what we're dealing with."
She said the United States is "supporting local law enforcement, supporting the authorities on the border, doing everything that we know to do to try to assist in helping to find the body and helping to find the perpetrators."
Clinton's comments came a day after U.S. and Mexican authorities vowed the search for Hartley would continue despite the grisly slaying of the Mexican government's lead investigator in the case.
"We continue the search on this side of the border," Zapata County, Texas, Sheriff Sigifredo Gonzalez Jr. told CNN. "We're also sending a message that we're here."
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