Spanish authorities were investigating an incident at the North Korean Embassy in Madrid Wednesday after assailants reportedly barged into the building, bound and gagged workers before fleeing the building with electronics.

National police in Madrid launched an investigation into the Feb. 22 incident after officers assisted a North Korean woman with unspecified injuries, the Spanish Interior Ministry said.

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The ministry said North Korean diplomats or other government officials have not filed a complaint.

The woman was reportedly one of the workers who was bound and gagged by the unidentified assailants, Spain's El Confidencial news site reported.

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The assailants fled with computers and cellphones, said Alejandro Cao de Benos, a tour guide and North Korean government aide, citing embassy staff members.

Report of the incident comes the same day President Trump and North Korean leader Kim Jong Un kicked off their second summit in Hanoi, Vietnam. The leaders exchanged handshakes and laughs Wednesday evening before briefly taking questions from reporters.

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They also enjoyed a “social dinner” Wednesday night, where Trump praised his “special relationship” with Kim and teased a "very busy day" Thursday of formal talks that hopefully "a lot things are going to be resolved."

The Associated Press contributed to this report.