Reed Saxon / Invision/AP 1 / 2
Reed Saxon / Invision/AP 1 / 2

CANCUN, Mexico (AP) -- Latin Grammy-winner Ana Barbara is under investigation in a hit-and-run in Cancun that left a 79-year-old woman dead.

Authorities in the Mexican state of Quintana Roo, where the tourist resort is located, initially arrested the singer's bodyguard.

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But the victim's family alleges that it was Ana Barbara who was driving -- and likely speeding -- when the vehicle hit the woman Sunday. The bodyguard, Jose Gomez, was released Monday after posting bail.

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Ana Barbara denied she was driving. She told the Televisa television network that she heard a noise then saw the victim on the ground. Ana Barbara won a Latin Grammy in 2005 in the category of best album for "Loca de Amar."