A large explosion has rocked an oil facility in the south-east Mexican state of Veracruz.
The explosion hit a facility owned by Mexico’s state oil company, Pemex, in the port city of Coatzacoalcos, state Governor Javier Duarte said on Twitter.
At least three workers were injured, Pemex said on its Twitter feed (in Spanish). Hundreds of people have been evacuated.
Images posted to social media showed a large fire and plumes of smoke.
Pemex said the part of the factory hit by the explosion was managed by a sister company, Mexichem.
Export of oil from the plant would not be affected, the company added.
A series of explosions have been reported other Pemex facilities in recent years.
In September 2012, an explosion then a fire at a gas plant in the northern state of Tamaulipas killed 33 people.
Pemex’s own headquarters in Mexico City was hit by a large gas blast in January 2013, killing 37 people.
A number of fires also struck the company’s rigs in the Gulf of Mexico last year.