Iran Press/ America: Lopez, who had been sheltering at the Spanish ambassador's residence in Caracas for 18 months, arrived Sunday in Madrid after first crossing into Colombia.
"The head of the Spanish diplomatic mission in Venezuela served as the main organizer and confessed accomplice of the... escape from Venezuelan territory of the criminal Leopoldo Lopez," President Nicolas Maduro's government said in a statement.
Following Lopez's departure, Caracas denounced what it called the flagrant breach of the fundamental provisions of the Vienna Convention on diplomatic relations by Spain.
It accused Spain of incessant interference in Venezuelan affairs.
Spanish ambassador Jesus Silva had been expelled in January 2018, also on allegations of interfering.
His return was agreed in April the same year, and Caracas says he failed to live up to his commitment to respect Venezuelan and international laws, noting his sheltering of Lopez.
Lopez, the former mayor of Chacao, an up-market district of Caracas, was arrested in 2014 and accused of inciting violence when mass opposition protests began in Venezuela.
He served several years in prison before being released to house arrest.
His father is a Spanish European deputy with the conservative Popular Party.
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