Image source, Getty ImagesImage caption, Desperate relatives are again waiting outside the prison for news of loved ones

At least 58 prisoners have been killed in new fighting at an Ecuadorean prison more than a hundred inmates died in clashes between rival gangs in September, police say.

The riot at the Litoral Penitentiary in the city of Guayaquil reportedly began on Friday evening.

Police tactical units who have entered prison buildings have found guns and explosives, reports say.

Nearly 300 inmates have been died so far this year in the country's prisons.

September's gang-related violence was the worst in Ecuador's history.

At the time, inmates from one wing of the prison crawled through a hole to gain access to a different wing, where they attacked rival gang members. Hundreds of officers and army soldiers were deployed to regain control of the complex.

The deadly fight, which saw some inmates decapitated, drew attention to the growing influence in Ecuador of transnational crime gangs such as the Mexico-based Sinaloa and Jalisco New Generation cartels.

The latest fighting has also left 12 people injured and follows a smaller armed clash earlier this month in which three inmates were shot dead.

Earlier this month President Guillermo Lasso insisted to the BBC that his government was regaining control not only of the prisons but also of areas of Ecuador where drug traffickers had gained a foothold.

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He accused previous governments of being "passive" about drug trafficking but warned that rising drug use in the country would take "more than a decade" to tackle.

And he said Ecuador would need international support from neighbouring Colombia, the US and the EU to strengthen its armed forces and police to combat the growing influence of crime gangs.

Ecuador's prisons are currently accommodating about 9,000 more prisoners than they were designed to hold, officials say. The Litoral Penitentiary was designed for 5,300 inmates but currently holds 8,500.