The leader of one of Ecuador's biggest drug-trafficking gangs has been arrested in Mexico City, officials say.

Ángel Esteban Aguilar Morales - better known by the alias Lobo Menor - was wanted in connection with the murder of presidential candidate Fernando Villavicencio in 2023, Ecuador's interior minister John Reimberg, said.

He added that Anguilar had obtained papers using a fake Colombian identity.

Mexico's security minister, Omar Garcia Harfunch, said Anguilar was "the subject of a red notice issued by Interpol and is linked to drug trafficking, extortion, and homicide".

Colombia's President Gustavo Petro described him as "one of the world's most notorious assassins".