The mayor of Mixtla de Altamirano municipality, her husband and her driver were shot to death by gunmen in the Mexican Gulf state of Veracruz, officials said.
They were travelling in a municipal vehicle on a highway in Mexico's Gulf coast state of Veracruz, authorities said Thursday.
Authorities found 31 bullet casings, Prosecutors said.
There was no immediate word on a possible motive, reports Xinhua
The killing came a day after a mayor was slain in the southwestern state of Michoacan. Eduardo Otlica Avilés of Nahuatzen was kidnapped and his body found hours later.
Killings of politicians in Mexico rose last year during nationwide elections but then fell off.
Overall Mexico's homicides were up 9.7 per cent in the first quarter of his year, compared with the same period in 2018.