A cargo truck crashed into a bus carrying agricultural workers in Mexico's eastern Veracruz state on Friday, killing 43 and injuring 20, reported Agence France-Presse. The bus was traveling from the port of Coatzacoalcos to the northern border state of Coahuila when it crashed around 4:30 a.m. local time.

The vehicles collided after the truck's trailer detached, Gina Dominguez, a spokeswoman for the Veracruz state government, said to Reuters.

A government statement also said the accident happened on a winding stretch of highway near the town of Alamo in the northern part of the state, according to the Associated Press.

President Felipe Calderon shared his condolences over the crash in a message posted through his Twitter account.

"My deepest condolences for the families of those who died in the terrible accident this morning in Veracruz," he wrote.

The driver of the truck drove away after the accident and his trailer hit another cargo vehicle, said Maria Elena, a government worker in Alamo, according to AFP. Those injured were taken to nearby hospitals in the port city of Tuxpan.

According to Reuters, the accident occurred in a part of Mexico that has been overwhelmed by drug-related gang violence in recent years.

Another collision on Friday between a passenger bus and a truck on a road in Jalisco state killed one and injured 36, reported AFP. The news agency wasn't given any other details.

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