UPDATE: CLEVELAND, OH (WOIO) - An update to a potentially explosive situation at the Cleveland Zoo Tuesday afternoon.
A zoo employee in the Vet Hospital spotted a bottle of Picric Acid that had started to crystallize.
The acid is used in Endocrinology - mostly urine tests - and can become highly explosive when it begins to crystallize.
HazMat, the bomb squad and fire department were called in to remove the bottle.
No one was injured and no animals were evacuated while emergency crews contained the situation.