The street is closed at the moment, a large number of emergency services are working at the site. Dozens of people were inside when the explosion occurred.
A number of casualties can rise further, according to the local media.
Firefighters were called at about 00:50 local time on Saturday (22:50 GMT on Friday).
One of the injured is in critical condition, according to Paris-Normandie.
The mayor visited the site. The exact reasons of the tragedy are still unknown, but it can be an accidental explosion, according to local media.
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