Several accidents, including a 50-car pileup are blocking more than 14 miles of Interstate 4 in Polk County beginning with this morning, officials said.

Three people were pronounced dead and at least one vehicle caught fire. There are at least 50 vehicle involved in the accidents, 20 of them being semi tracker trailers. Several individuals are still entrapped inside their cars while the rescue crews are working to get them out.

Deputies with the Polk County Sheriff’s Office have closed Interstate 4 between State Road 570 and U.S. Highway 27 near Haines City. Parts of State Road 570 also have been shut down.

The accidents are a result of smoke from yesterday’s brush fire that started as a controlled burn. The fire burn more than 600 acres of rural land near mile marker 55. The blaze is under control but fire officials remain at the scene as smoke mixed with fog continues to swamp the area.

People are advised to wait patiently in their cars for both their safety and the safety of rescue workers.

The National Weather Service in Melbourne issued a special weather report this morning warning commuters that visibility in the Polk County area would be down to zero because of smoke combined with the fog. Meteorologists also said that the visibility would improve later in the morning.

Officials suggest anyone who plan on driving on Interstate 4 in Polk County should find alternate routes. One route would be the U.S. 27 to 17-92. People shall continue on that until it becomes 92, which will reconnect with Interstate 4 beyond the crash.

Moreover, the Polk County School District said that the busses would be running, but they would be significantly late.