One week after announcing the closure of its laboratory in São Roque, the Instituto Royal was raided again. In the early hours of November 13, a group of masked activists stormed the complex, forced open doors and removed more than 300 rats and mice who still remained inside the lab. According to police, three security guards were tied up during the raid (one guard was tied up with laces from his boots).

Expensive microscopes, computers and other research equipment was destroyed. Three cars and a motorcycle parked on site were also vandalized. "We regret that activists have again resorted to riot," the institute said in a statement.