The explosion at the Paris American Academy – a private college popular with exchange students from the US – on June 21st injured almost 50 people.

Now one of those, a woman who had been passing in front of the building, succumbed to her injuries in hospital on Thursday, a source close to the investigation confirmed to AFP.

She becomes the second fatality of the blast, after the body of a woman was dug out of the rubble of the building several days after the explosion – believed to be Anne B, a 57-year-old teacher at the school.

In total 50 people were injured in the blast, which also sparked fires in neighbouring buildings. Two other people remain in hospital in a critical condition. 

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An investigation into the blast has been opened by the Paris public prosecutor’s office – the cause is not yet officially determined but is believed to have been a gas leak.