A massive fire broke out Saturday afternoon at a laboratory building on the University of South Florida campus in St. Petersburg, authorities said.Campus police said fire crews were called to the Marine Science Laboratory building for a structure fire.No injuries have been reported, and the building was safely evacuated, police said.The cause of the fire is under investigation.LIGHTNING STRIKE TURNS 100-FOOT DINOSAUR INTO RAGING FIREBALL, STUNNING ONLOOKERSLarge plumes of gray smoke were seen rising from the building late Saturday.According to the Tampa Bay Times, students and staff were alerted to the fire shortly before 6 p.m.The school sent an alert reading: "Urgent Alert. Fire reported in MSL, Marine Science Lab. Evacuate building. Avoid area. Emergency personnel responding."TWO INJURED AFTER EXPLOSION RIPS THROUGH CHEMICAL PLANT, SPARKING HAZMAT RESPONSE, SHELTER-IN-PLACE ORDERSt. Petersburg Fire Chief Michael Lewis said more than 60 units and about 200 firefighters responded to the scene.Lewis said around 9 p.m. that the fire was largely extinguished but that the building is likely "a total loss.""The entire roof has burned off," he said, according to the report.USF police said it will provide additional updates as more information becomes available.The Associated Press contributed to this report.