Hotel / Restaurant, Restaurant Sioux City, IA – No injuries at McDonald’s restaurant after fire is extinguished by sprinkler system February 9, 2016 viking210 Crews were called just before 5 p.m. to a grease fire in the McDonald’s store on Sunnybrook Drive in Morningside. When they arrived the fire was mostly already out thanks to automatic sprinkler systems in the restaurant, but the store was still filled with smoke. Firefighters say the cause of that fire is unknown at this time. “We had a fire in the kitchen, unknown origin at this time, fire has been extinguished,” said Capt. Richard Andersen, Sioux City fire department. “We are waiting for the fire prevention bureau to show up, to do an investigation. At that time they will determine what the cause is. And we will turn the building back to the owners and they can start cleanup process to reopen the building.” Everyone in the store evacuated safely before firefighters arrived. At this time damage appears to be confined to the store’s fryers.