Greatest magnitude. President trump tweeting new york city, looks like another attack by aic sick and deranged person. Law enforcement following this closely. Not in the usa, he says. Despite the horrifying number of the people kill and injured here it could have been far worse. An officer stationed nearby stopped the carnage moments after it began. Well continue to monitor for the latest. Nancy chen, abc7 news. Michelle a lot of folks calling that heroic officer a hero tonight. This statement coming from the d. C. Police department. They said as a Law Enforcement Agency Responsible for protecting the nations capitol we are actively working in coordination with the local and the federal Law Enforcement partners as well as Homeland Security agencies to ensure the safety of all visitors and the residents d. C. If you see something, say something. Jonathan nancy chen will update us as we learn it and world news tonight will have extensive coverage starting at 6 30. You can get alerted to