Very, very sad news from Paris. At least 120 people have been killed and over 200 injured in a series of shootings and explosions around several locations in Paris. The attackers are still not known – no group has claimed responsibility – but according to the French police, they are all believed to be dead.

What is heartening to see, though, is how everyone has rallied together during this difficult time. Twitter is filled with messages of people opening their doors to those who might need shelter (check the hashtag #PorteOuverte) and Facebook has created a tool to let people know you are safe.

Also, the lights in the Eiffel Tower have been switched off as a sign of mourning and a mark of respect for those who have lost their lives. Take a look at the photos doing the rounds on social media:

#PrayForParis