During a routine hazardous waste collection an elderly Westport woman turned in a live hand grenade Saturday.

Westport Fire Marshal Ed Zygmant says the department was shocked to see the device. He says typical materials brought to the collection are oil-based paints, pesticides and cleaning solvents.

Zygmant says no charges were filed. The grenade was immediately moved away from the collection site and eventually detonated by the state police's bomb squad. Authorities say they need to talk to the woman who dropped off the grenade to make sure there aren't anymore explosive devices at her home. They say they believe it was from either the World War I or World War II era.