Spanish media reports say the assailants are retraining staff members with a variety of items before fleeing in luxury vehicles.
During the attack, a Korean woman managed to escape from the embassy and screams alerted residents, who called the police, the newspaper said. 19659003] Donald Trump and North Korean leader Kim Jong un hit their second summit, in the Vietnamese capital of Hanoi.
Trump and Kim's meeting ended abruptly in part due to disagreement over when to remove UN sanctions in exchange for steps towards Pyongyang's denucleazation. But Trump and his aides said both sides left on good terms.
Police declined to disclose details about the embassy case, as the matter is under investigation, and Spain's Interior Ministry said it does not comment on active investigations. CNN has reached out to Spain's Foreign Ministry comment.
A source from the US government said it is the Cheollima Civil Defense, a shadowy North Korean dissident group, is behind the attack.
The Washington Post was first to report the involvement of the CCD's secretive group, whose goal is to overthrow the Kim regime. The group did not respond to CNN's request for comment and has not publicly claimed responsibility for the attack. Kim Jong Nam, the elder half-brother of North Korea's leader, was exposed to the deadly nerve agent VX in 2017 while entering an airport in Kuala Lumpur, killing him in minutes. US, South Korean and Malaysian authorities have attacked on Pyongyang, but North Korea has adamantly denied any responsibility.
It's unclear why Kim Jong Nam was killed, but analysts said that if North Korea was behind the murder, perhaps Kim Jong Un saw his brother and his family as a possible threat to his leadership.
"The Cheollima Civil Defense established credibility by acting quickly and getting Kim Han Sol, the son of Kim Jong Nam, within days of his father's gruesome assassination," said Sung-Yoon Lee, a professor at Tufts University Fletcher School of Law and diplomacy
Connection to Kim Hyok Chol?
Spanish media quoted anonymous sources speculating that the embassy incident may be connected to forms North Korean Ambassador Kim Hyok Chol.