“Diesel”, a French police dog, was killed today during a police raid of the apartment of ISIS suspects in Paris. The hashtag #JeSuisChien, which means “I am dog,” started to trend worldwide on Twitter as people used it to remember the fallen hero.

The hashtag was used over 55,000 times after the dog’s death was announced. It was made in relation to the hashtag #JeSuisCharlie that was used after the January terror attack at the newspaper building on Charlie Hebdo.

The 7-year-old Belgian Shepherd was killed during the seven-hour siege on an apartment in the Paris suburb of Saint Denis.