The U.S. Embassy in Madrid announced that it discovered a letter bomb one day after a similar device exploded at the Ukrainian Embassy in Spain, injuring one staff member.
“We can confirm a suspicious package was received at the U.S. Embassy in Madrid, and are aware of reports of other packages sent to other locations throughout Spain,” the U.S. Embassy said in a statement.
“We are grateful to Spanish law enforcement for their assistance with this matter,” it added.
Authorities detonated the envelope Thursday morning, according to CBS News. The mailing is being investigated as a terrorist act.
The explosive package is now the sixth device sent to targets in Spain, including the Spanish defense ministry, an air force base, the Ukrainian Embassy, and a weapons manufacturer, according to Reuters.
A spokesperson for the Ukrainian Embassy, Oleg Nikolenko, said an explosive device was “hidden” in an envelope and detonated early Wednesday.
“FM @DmytroKuleba instructed to strengthen the security of all Ukrainian embassies,” Nikolenko tweeted. “He also called on the Spanish authorities to urgently investigate this attack.”
The envelope arrived by regular mail and was not scanned. The explosive device caused “a very small wound on the ring finger of the right hand” of the injured staffer, according to Reuters.
The unidentified man reportedly visited a hospital for treatment.
Ukrainian Defence Minister Oleksii Reznikov and Spanish Defence Minister Margarita Robles met on Thursday to discuss the details of Spain’s additional military aid package for Ukraine.
“What must be very clear is that none of these deliveries or any other violent action will change the clear and firm commitment of Spain, NATO countries and the European Union to support Ukraine,” she said in a statement from Ukraine.
No person or organization has yet taken responsibility for the letter bombs. Secretary of State for Security Rafael Perez said Thursday that the letters were likely sent from Spanish territory, though an investigation has yet to confirm their place of origin.
The report also follows strong words by Secretary of State Antony Blinken against Russia’s invasion of Ukraine during a press conference in Bucharest, Romania.
“Heat, water, electricity, for children, for the elderly, for the sick — these are President Putin’s new targets. He’s hitting them hard,” Blinken said Wednesday. “This brutalization of Ukraine’s people is barbaric.”
Blinken’s visit came as the U.S. announced $53 million more in aid to help Ukrainians following attacks on civilian infrastructure.