SUPERIOR, Wis. (AP) — The Latest on a Wisconsin refinery explosion that injured several people (all times local):

Authorities are ordering residents to evacuate their homes near a Wisconsin refinery that was rocked by an explosion. * HUSKY ENERGY INC - IS RESPONDING TO A FIRE AT ITS SUPERIOR REFINERY LOCATED IN SUPERIOR, WISCONSIN

* HUSKY ENERGY - THERE IS NO DANGER TO PUBLIC OR LOCAL RESIDENTS AT THIS TIME

* HUSKY ENERGY INC SAYS THERE ARE INJURIES RELATED TO INCIDENT AT SUPERIOR REFINERY, WHICH ARE BEING TREATED AT HOSPITAL AND ON SITE Source text for Eikon: Further company coverage: Superior Mayor Jim Paine says most of the northwestern Wisconsin city is being evacuated as black clouds billow from the Husky Energy oil refinery. Husky has about 180 employees and said in a statement on Thursday that all workers are accounted for. Evacuation order given within 10 miles south the refinery, 2 miles north and 3 miles to the east or west of refinery on the east side of Superior. It is believed that at least 20 people were injured in the blast but thankfully, no fatalities have been reported at this time. Essentia Health spokeswoman Maureen Talarico said five people injured in the explosion are being treated at St. Mary's Medical Center, a Level II trauma center in Duluth, Minnesota. She said emergency room physicians described those patients as 'awake and alert'. Talarico says another five are being treated at St. Mary's Hospital in Superior, Wisconsin, where the explosion happened. The extent of injuries to the victims are currently unknown. The explosion at the Husky Energy oil refinery happened at about 10am, Superior Fire Chief Steve Panger said, and it was put out a little more than an hour later. UPDATE (12:26 pm): The Superior Police Department has sent out a tweet informing people that the fire has reignited on site but there is no need to evacuate. A tank containing crude oil or asphalt exploded at a large refinery in Wisconsin on Thursday, injuring several people and prompting fire officials to order a large-scale evacuation. Many people who were on the property at the time of explosion describe the sound of the blast as a “sonic boom.”

Newsweek reports that the fire was initially put out around 10:45 a.m. but later the Superior Police Department sent out a tweet saying that the fire had reignited. Wdio.com is reporting that a contractor that was working on site and said that it sounded like a "sonic boom"

UPDATES: 12:20 PM

Fire re-ignited at refinery, thick black smoke visible at the scene (as seen in our live video above)

1 person is receiving treatment for "significant blast injuries". Calgary-Alberta-based Husky Energy refinery bought the refinery from Indianapolis-based Calumet Specialty Products Partners last year for over $490 million. while the other four people injured are receiving treatment for other, less severe injuries. An initial news release from the Superior Fire Department reported at least 20 “casualties,” but an updated release from Fire Chief Steve Panger said “at least 6 transported – no report on severity of injuries.” The fire chief later confirmed five people were taken to hospitals in Duluth, Minnesota. The total amount of injured could be as high as 20 however, including walking wounded who were not taken to the hospital. Authorities have said there are no known fatalities. In a tweet around 12:15 p.m., the Superior Police Department told everyone in the area to steer clear of the area immediately surrounding the refinery but said that it was not necessary for anyone the evacuate. It's unclear how many people are impacted by the evacuation.
An explosion occurs in the Husky Oil Refinery in Superior, Wisconsin. Five people are reportedly injured. Local residents have been ordered to evacuate.