Last night, a suicide bomber set off a homemade bomb in the foyer of an Ariana Grande concert at Britain's Manchester Arena in Manchester, United Kingdom, killing 22 and injuring 59. Among those confirmed dead were two girls, ages 8 and 18.
In the panicked evacuation that followed the explosion, many of the attendees, who were predominantly young girls, got separated from their friends. Among them was Twitter user Riley Blackery, from Merseyside. Blackery took to Twitter after the blast to ask for details about her missing friend, Heather.