At least 13 people were killed and many injured in Barcelona City Centre after a van crashed into dozens of people. According to The Associated Press, the Police in Spain has called the incident a terror attack. Soon after the incident, emergency services said people should not go to the area around Barcelona's Placa Catalunya, one of the city's main squares at the top of the famous Las Ramblas avenue, and requested the closure of nearby train and metro stations. Prime Minister Mariano Rajoy said he was in contact with authorities, and the priority was to attend to the injured. Here's how Twitterati reacted to the Barcelona attack: The United States condemns the terror attack in Barcelona, Spain, and will do whatever is necessary to help. Be tough & strong, we love you! — Donald J. Trump (@realDonaldTrump) August 17, 2017 Very sad to hear about the attack in Barcelona, thoughts are with them, solidarity with the city and people. — Colch (@Colch5) August 17, 2017 This is horrible. Stay Strong #Barcelona. Hope the perpetrators of this gruesome attack get nabbed. #BarcelonaTerrorAttack — T@nujKh@nn@ (@TeeeeeKayyyy) August 17, 2017 Thoughts and prayers to #Barcelona — Melania Trump (@FLOTUS) August 17, 2017 Another awful terrorist attack. World is just getting worse everyday. #Barcelona is having very bad time 💔😢#PrayforBarcelona — Ayush (@Official_Ayush) August 17, 2017 Another senseless attack on freedom, governments in Europe must work together to deal with underlying causes. #Barcelona — Alan Keers (@RedKiteAlan) August 17, 2017 Please send prayers to people in Barcelona. Another apparent attack. It's time to turn this energy around people.. — Angel Souls (@angelsouls444) August 17, 2017 .@JunckerEU "Deepest condolences to families & loved ones of the victims.Thoughts are with the people of #Barcelona" — Tove Ernst (@ToveErnst) August 17, 2017 Deeply saddened by the attack on our city. All our thoughts are with the victims, their families and with the people of Barcelona. — FC Barcelona (@FCBarcelona) August 17, 2017 Upset by the terrorist attack on a city that's so dear to me. Sending heartfelt hugs to all the families of the victims in Barcelona. — Pep Clotet (@pepclotet) August 17, 2017 my heart and love is with those in Barcelona today. Please stay safe and with your families. Sending you all love 🖤 — Neels Visser (@neelsvisser) August 17, 2017 Deeply saddened to hear about the attack in the wonderful city of Barcelona. What purpose this barbarity serves is beyond comprehension. — Gary Lineker (@GaryLineker) August 17, 2017 New Yorkers know too well what the people of Barcelona are feeling. We stand with you and your great city. — Eric Schneiderman (@AGSchneiderman) August 17, 2017 Sec. Tillerson: We offer condolences to the loss of life & the injuries that have occurred to so many innocent people yet again. #Barcelona pic.twitter.com/RKcE5MCqNB — Department of State (@StateDept) August 17, 2017 Michelle and I are thinking of the victims and their families in Barcelona. Americans will always stand with our Spanish friends. Un abrazo. — Barack Obama (@BarackObama) August 17, 2017