Mexican authorities have discovered at least 166 bodies in a mass grave in Veracruz state.

It is the latest horrifying find in a region that has seen grisly drug cartel turf wars.

The grave is located in central Veracruz, but authorities are not releasing the exact location for security reasons. Forensic specialists are still working at the scene.

Home to the city of Veracruz, one of Mexico's largest ports, the eastern state has been the scene of bloody power struggles between rival cartels in recent years, coupled with some of the country's worst human rights abuses and corruption scandals under jailed ex-governor Javier Duarte (2010-2016).

Prosecutor Jorge Winckler said investigators had also found 200 articles of clothing, 144 ID cards and other personal belongings at the site since exhumations began on 8 August.

An informer told authorities that hundreds of people in all were buried at the site, the state prosecutor's office said in a statement.

Authorities have used drones and ground-penetrating radar to help them locate the bodies, it said.

Families of some of Veracruz's missing persons are still digging at another mass grave found in 2016, where 280 bodies have been discovered so far.

Mexico has been hit by a wave of violence since deploying the army to fight the country's powerful drug cartels in 2006.

Since then, more than 200,000 people have been murdered, including a record 28,702 last year.

Another 37,000 people are reported as missing.