Grenade found in grandfather's belongings kills Indiana man, injures 2 teenage children

A man was killed teenagers were injured after a hand grenade that was found in a gradnfather's belongings went off in an Indiana home, police said.

Shortly before 6:30 p.m. Saturday, the Lake County Sheriff's Office responded to a call about an explosion at a home in the Lakes of the Four Seasons neighborhood, Sheriff Oscar Martinez Jr. said in a statement. 

Police found a man, identified by the Lake County Coroner's Office as 47-year-old Bryan Niedert, unresponsive. He was later declared dead, police said.