Mexican officials and American authorities are still searching for the body 30-year-old David Hartley. The American tourist and his wife Tiffany Hartley were jet skiing on a lake that straddles the U.S. and Mexico when Tiffany says they were ambushed by gunmen.
But is that how it really happened?
"Early Show" co-anchor Erica Hill reports there are new questions about what happened that day. Police in Mexico want to know if what Tiffany Hartley says happened is actually the truth.
Hill said there's still no sign of American tourist David Hartley four days after he was reportedly shot in the head by suspected pirates on a lake along the Mexican border.
His wife, Tiffany, 29, made a desperate 911 call after reportedly racing to his aid, but says she was chased away by gunfire.
In a 911 call, Tiffany said she saw three boats. He is now presumed dead and his body has not been recovered.
And now Mexican authorities are questioning whether the attack took place at all. In a statement, Marco Antonio Guerrero Carrizales, district attorney for the Miguel Aleman Province, writes, "We are not sure. We are not certain that the incident happened the way they are telling us."
The district attorney questions why his body has not been recovered, particularly because they were told he was wearing a life vest and why there is no sign of his jet ski. In fact, the district attorney contends, no evidence exists that a crime was committed.
In response to these new questions by the district attorney, Tiffany Hartley said from McAllen, Texas, on "The Early Show" said she can understand the questions, but said the Mexican authorities have not been looking for him.
"As far as we know, we don't think they have been looking. And there is -- we understand the possibility that the people who did this probably have him. And that's why maybe they can't find him," she said.
Pam and Dennis Hartley, David's parents, said they need to get on the Mexican side of the border to look for their son.
Pam said, "There's been no searching on that side much the lake. I mean, we're pleading to Mexican president, to Governor Perry, to President Obama, to Hillary, help us bring our son -- Tiffany's husband --home. It's like we need to get over there and hunt for him. If nobody's hunting, how can he be found?"
As for Nikki, Tiffany's sister-in-law, she says she supports her "one thousand percent," in spite of the new questions being raised. She held Tiffany's hand throughout the interview.
"There's no doubt in our mind we stand behind her," she said. "She's just not a sister-in-law, she's a sister."
"Early Show" co-anchor Maggie Rodriguez asked Tiffany, "You were returning from a day of sightseeing with David when this happened. I know that you had lived in Mexico for three years before moving back to the U.S. a couple of months ago. Did you know that there had been a spate of robberies on the lake? And did you have any concerns about going out that day?"
Tiffany replied, "We had heard about the pirates, and them robbing fishermen and whoever were over there. But we hadn't heard anything for several months. So, no, we had no concerns whatsoever of going over there, living in Reynosa, I mean, you live there for two and a half years, and we're not people who, you know, blend in. We stand out. We don't blend in. And we lived there, and we lived a life of no fear. That we were not going to stop living our life and adventures. David loves the history. That's what he loves. And that's why we were there that day."