PSG must overturn a 1-0 deficit from last week's first leg after a Niclas Fuellkrug goal gave Dortmund a narrow victory in Germany
No additional information on the nature of the celebration was immediately available.
The scene was safe with no lingering threat to the public, Buckner said. Agencies from around the region had helped respond to the scene, Walsh said.
A "self-transport" to the hospital was involved in a vehicular accident with a police officer near the scene, the police chief said.
No information regarding the ages and identities of the victims was immediately released. It was too early to tell whether the victims were connected, Buckner said.
"Our city is a very resilient city. We've taken a lot of licks over our history, and this will certainly be one we remember, but we're trying to figure out who's responsible for this so that we can hold those individuals accountable," the police chief said.
Answering a reporter's question at the press conference, Walsh said fireworks - at least two of which went off in the distance, visible over the police chief and mayor's shoulders - and gun crime were "plaguing" cities across the U.S.
"This is our city, and we're going to do everything we can to protect it," the mayor said.
PSG must overturn a 1-0 deficit from last week's first leg after a Niclas Fuellkrug goal gave Dortmund a narrow victory in Germany
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The Israeli military did not offer an immediate comment, but earlier on Sunday it ordered residents of Al-Shuka and Al-Salam to move to a humanitarian area
The authority called on residents to not circulate rumours and false information during this time
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