Mexico's state-owned oil company, Pemex, says two researchers have been killed in a pipeline explosion at the Gulf coast port of Coatzacoalcos, in eastern Veracruz state.
In a statement issued late Wednesday, the oil company says the explosion occurred in a 91 centimeter oil pipeline at the Pajaritos Maritime Terminal. Pemex officials say the men were conducting environmental studies for the company.
The company says the accident caused little or no environmental damage.
Pemex has suffered a series of accidents in recent months. Last week two workers died and three others were injured in a tower collapse at an oil field in southeastern Mexico.
Last December, another Pemex oil pipeline exploded in Veracruz, injuring at least five people and causing some five thousand barrels of oil to spill into the Coatzacoalcos River near the Gulf of Mexico.
Some information for this report provided by AP.