Maria Santos Gorrostieta, 36, had survived two assassination attempts that left her with several bullet wounds and a dead husband.
However, Gorrostieta, the former mayor of Tiquicheo -- a rural district in Michoacan, west of Mexico City -- was known for standing up to Mexican drug gangs that ravaged her district.
Her body, which was stabbed, burned, battered and bound, was recently found dumped by a road in the San Juan Tararameo, Cuitzeo Township, reports the Daily Mail.
Gorrostieta leaves behind two sons, a daughter and her second husband Nereo Delgado, who is missing.
Gorrostieta disappeared on Monday, November 12, after leaving home to take her daughter to school.
During the trip, in Morelia, Mexico, another vehicle blocked her van. Then two men pulled Gorrostieta out of her van.
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Gorrostieta managed to get the men to leave her daughter alone, but she was kidnapped in a car with tinted windows.
Following the kidnapping, her family spent days waiting for a telephone call for a ransom demand.
Finally, they reported her missing on November 14 and her body was found three days later.
Gorrostieta was elected mayor of Tiquicheo in 2008. The first assassination attempt came in October 2009 when the car she was traveling in, with her first husband Jose Sanchez, came under fire from gunmen. Sanchez died, but Gorrostieta survived.
The next attempt on Gorrostieta's life was three months later when a van she was traveling in was shot by 30 bullets. Three hit her, but she survived.
She later remarried and ran for a seat in Mexico's Congress of the Union, but failed to win.
Gorrostieta's government security team was withdrawn in November last year and her police escort was discontinued in January.