Hundreds of Belgians are opening their doors to people across Europe who are being affected by the terror attacks in Brussels.

Much of Belgium has gone into lockdown after attacks on the Brussels airport and metro system, which have left the city in crisis and public transport systems shut down.

People are tweeting with the words #IkWilHelpen, or I will help, offering people access to their homes or somewhere to stay, and lifts around the affected areas. Many are also using #PorteOuverte, a hashtag that means open door and spread across the internet in the wake of the Paris attacks.

After those attacks in November, many people used the hashtag to offer shelter, support or other help in the wake of the shootings.

Twitter and Instagram exploded with solidarity artwork on Tuesday, with people using hashtags like #PrayForBrussels.

Here are some of the moving tributes found online.

Photograph: @eurocrat/Twitter

Photograph: theshando/Instagram

Photograph: ‏@theusofmusic/Twitter

Photograph: streetartglobe/Instagram

Photograph: orianedavid/Instagram

Photograph: @davitter/Twitter

Photograph: ‎@zapata_painter/Twitter