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The authorities are investigating an accident that killed 17 people and working to identify victims, which they said had Portuguese and foreign surnames.

By Emma Bubola

Portugal’s government declared a day of national mourning on Thursday, a day after a vintage Lisbon funicular that is a popular tourist attraction crashed and killed 17 people.

The victims included passengers with both Portuguese and foreign surnames, local authorities said, though their nationalities were not clear. They added that at least 20 other people were injured in the crash. The vehicle lost control as it was traveling down a steep hill in the center of Lisbon, Portugal’s capital, early Wednesday evening.