At least 13 people were hurt Friday in an explosion in the French city of Lyon, prompting a national investigation into possible terrorism.
The blast occurred in the early evening in the city's central shopping area. The French television channel BFMTV reported 12 adults and an 8-year-old child were taken to three hospitals in Lyon.
French police are still looking for the person suspected of carrying out the attack, according to a tweet from the French National Police verified Twitter account. Police also tweeted a photo of the man they believed to be "the author of the attack" and asked the public to call with any information.
Investigators believe the explosion may have been caused by a parcel bomb packed with nails, a spokeswoman for the city prosecutor told CNN.
An investigation into "terrorist conspiracy" has been opened, French Justice Minister Nicole Belloubet announced hours after the explosion