AKIPRESS.COM - More than 100 human skulls have been found in a mass grave in the Mexican state of Veracruz, Sky News reports.

The 166 skulls are believed to have been buried at least two years ago, according to Veracruz state prosecutor Jorge Winckler.

Mr Winckler would not reveal the exact location of the grave for security reasons but he did say that investigators had found 32 burial pits and 114 identification cards in the field.

Clothes, personal possessions and other parts of skeletons were also found and forensic investigators are still working at the scene.

The mass grave was found after a witness told prosecutors that "hundreds of bodies" were buried in the area and Mr Winckler would not rule out the possibility of finding more.

The mass grave is one of the largest discovered in Mexico and those buried are thought to have been victims of the country's ongoing drugs war.

Mexico has seen a rapid increase in violence since the army was deployed to fight the drug cartels in 2006, with more than 200,000 people murdered since then - 28,702 last year alone.

Some 37,000 people are reported as missing.