HOLT, MI --
Authorities say a second grader brought an inert U.S. military grenade to a central Michigan elementary school for show-and-tell, prompting a lockdown. The Ingham County sheriff's department says the principal at Elliott Elementary in Holt, near Lansing, removed the grenade from the building on Tuesday morning and called authorities. The Michigan State Police bomb squad came to remove the grenade and declared it inactive.
The sheriff's department says the grenade could date back to World War II.
The school was on temporary lockdown while authorities responded.
No injuries have been reported and no charges are expected. The school was searched and no other potential explosives have been found.