What is believed to be a homemade firework exploded at Walmart on Wanamaker Road in Topeka Monday morning.

According to Fire Marshal Mike Martin, just before 10 a.m. a small explosion occurred at the Walmart. 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.

The firework did not appear to cause damage or injury or to be designed for that purpose. If you know more about what happened, call Crime Stoppers at 234-0007.