The blast occurred shortly before 9 p.m. (1900 GMT). French newspaper Le Figaro said video surveillance images showed a man dropping a backpack at the entrance of a residential building shortly before the explosion, News.az reports, citing Reuters.
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Eric Ciotti, the right-wing mayor of nearby Nice, across the border in France, said on X: “The attack committed this evening is a tragedy for Monaco.”
A spokesperson for the Monaco police declined to comment.
Monaco is a tax-free microstate on the French Riviera known as a haven for billionaires and their luxury yachts.
