A tragic update to a story we first told you about last night.

Two people were killed and nearly a dozen more injured following an explosion at a factory in Louisville.

The blast caused part of the building to collapse and sent debris flying into nearby homes.

Our Jim Leffler was in Louisville this morning when city officials talked about the investigation.

This is what's left after an explosion at a factory in Louisville.

The damage spilled into residential streets.

Now there's some tarps on roofs blown out windows and large debris in the streets.

This scene is incredibly sad and tragic incident.

These two individuals who have passed went to their job in an ordinary day to provide for their family when the unthinkable will happen.

The first victim who passed away was transported to U of L Hospital and died as a result of the injuries sustained in the blast.

The second victim was found in the rubble, found in the rubble late last night as Louisville firefighters went back into the building late last night to confirm that everyone had been accounted for.

Someone at the company told the city later that day a worker could still be missing.

City officials say.

Initially we had all been told that at the scene by the business, we'd been told by the business that all of the employees were accounted for.

Tragically, that was not the case.

We did find out where that victim was.

And at that point, again, trying to show dignity for the family and to make sure that we take care of everyone.

We sent our people back in.

It was about a three and a half hour process to safely get into that area, to get to that person and recover that victim.

With help from other agencies.

Louisville's fire department will conduct an investigation.

I know many of you are probably concerned.

Say what actually happened?

Why did it happen?

And I'm going to apologize in advance.

We don't have those answers immediately.

The Java Don, since Colored Plant made food coloring, it is the same site of an explosion that killed a worker and 23 different company owned it.

Then, as shown in this video, courtesy of WD RB.

Secondary to that 2003 event that dealt with a solid anhydrous ammonia that is no longer on site that was not dealt with here.

The only thing we can speak to that is that our inspections of that plant over the past several years showed no other issues.

The plant is nestled into a long standing neighborhood not that far from downtown.

Residents were told to shelter in place for a few hours, but officials say there are no lingering health concerns.

Air monitoring was set up from the get go, not only in the immediate area, but the entire vicinity to make sure that we're keeping the community as safe as possible.

Wednesday morning, six people from the plant were in stable condition and three had been discharged from U of L Hospital.

The workers aren't unionized, but a local labor group is offering them some financial assistance.

The company was invited to the city's press conference, but no one showed up.

For Kentucky Edition.

I'm June Leffler.

Thank you, June.

And a statement to the company said it was grieving with the families and friends of the victims, and they thanked first responder