A warehouse in Brownsville created an unusual kind of fire Friday as crews battled a blaze there.

The Brownsville fire and police departments responded to the fire at a warehouse located on the 1300 block of Cheers St. 

The warehouse was used to store crates of hand sanitizer.

“This is an alcohol fire, alcohol fires aren't always visible,” Brownsville fire Chief Jared Sheldon said. “What we're seeing is the flames, mostly from the cardboard and the other debris. As you get closer you can feel the heat, but you don't necessarily see the flames. So we're making sure our personnel stay at a safe distance as we cool down the area."

The cause of the fire remains under investigation.