One man is dead and his two children are hospitalized after a hand grenade exploded at a home in Indiana, according to reports on Sunday. The explosion, at a home in the 3400 block of West Lakeshore Drive in the community of Lakes of the Four Seasons, was reported sometime before 6:30 p.m.

According to the Lake County Sheriff’s Office, the family was at the home where they were going through a grandfather’s belongings. They found a hand grenade, someone pulled the pin on the device and it detonated. The father, identified as Bryan Niedert, 47, was found unresponsive at the scene and was later declared dead. The man’s two children – a 17-year-old son, and an 18-year-old daughter – were hospitalized with shrapnel wounds.

The Lake County Sheriff’s Department said that a Porter County Bomb Squad was sent to determine if there were any other explosives at the home. An autopsy is pending at the Lake County Coroner’s Office.

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