An explosion rocked downtown Seattle Wednesday morning. The explosion happened around 9:30 am Seattle time.

Crews evacuated the building in which the explosion occurred in the basement. No active fire was found at the scene. A Hazmat crew is also responding.

Fire crews have established a one-block perimeter around where the blast occurred where only officials are allowed to cross.

The Seattle Police Department confirmed they are investigating an explosion in the 100 block of 1st Avenue North, just a few blocks from the Space Needle.

Fox13 Seattle is reporting that the explosion appears to have been caused by fireworks.

When the Seattle Fire Department (SFD) arrived, there was no active fire, but one person was seriously injured. The SPD announced later that the patient’s injuries were non-life threatening.

According to SPD Public Information Officer Judinna Gulpan, the explosion was caused by a man who was handling fireworks during the explosion.

“He did sustain a non-life-threatening injury to his hand,” said Gulpan. “Police arrived on scene and provided medical aid to him before Seattle Fire Department arrived. When they arrived, they continued medical assistance and later transported him to Harborview Medical Center for further medical evaluation.”

As this is a breaking news story, RedState will provide updates as they become available.