The mayor of a city south of Mexico's capital has been shot to death less than a day after taking office.

The Morelos state Public Security Commission says attackers invaded the house of Gisela Mota on Saturday morning in the city of Temixco and killed her.

Gov. Graco Ramirez says on his Twitter account that two other people died and two others have been detained. Details of the incident and the motive remain unclear.

Temixco is a city of about 100,000 people neighboring Cuernavaca, and resort and industrial city which has been suffering kidnappings and extortion linked to organized crime groups.

Mota was sworn into office on New Year's Day. She was a member of the leftist Democratic Revolution Party and had been a federal congresswoman.