The mayor of the capital of southern Mexico's Guerrero state has been killed less than one week after he took office.

The gruesome killing represents yet another challenge for the country’s new president, who faces increasing pressure to show progress in the fight against violent cartels.

The mayor of the capital of Mexico's violence-plagued state of Guerrero was killed on Sunday less than a week after he took office, the state's governor confirmed.

The mayor of a state capital in southern Mexico has been killed just one week after he took office, officials said Sunday. Alejandro Arcos was sworn in last Monday as mayor of Chilpancingo, a city so violent that a drug gang openly staged a demonstration,

The mayor of a crime-ridden city in Mexico has been killed less than a week after taking office, the latest in a string of violent attacks targeting politicians in the country.

Alejandro Arcos' murder came days after the killing of another city official. according to the Institutional Revolutionary Party.

Alejandro Arcos, the newly appointed mayor of the Mexican city of Chilpancingo, has been killed one week after his inauguration.