MEXICO CITY (Reuters) - A magnitude 5.5 earthquake struck Mexico's southern state of Oaxaca on Friday evening, Mexican authorities and the United States Geological Survey said.

The quake hit near the town of San Miguel Achiutla at a depth of 64 km (40 miles), the USGS said.

Mexican President Claudia Sheinbaum said on X that no damage had been reported, while the governor of Oaxaca said in a post that emergency protocols had been activated.

The earthquake triggered Mexico City's seismic alarm, sending residents briefly into the streets.

(Reporting by Brendan O'Boyle; Editing by Jacqueline Wong)