Just before 10a.m. Monday, a small explosion occurred at Walmart, at 1501 SW Wanamaker in Topeka, according to Fire Marshal Michael Martin.
Witnesses stated that an unknown individual was seen throwing an object out of their vehicle shortly before the explosion occurred. Topeka Police Officers responded to the scene and requested a Fire Investigator to the scene to perform a post-blast investigation.
The device was more likely than not a homemade firework and did not appear to be designed to cause damage or injury, according to Martin.
Any individuals with information about the circumstances of this are being asked to contact police.