A man fishing in a southwest Missouri lake Tuesday was trying his luck for bass when he hooked into a hand grenade.

The grenade prompted a military response to the Fellows Lake Tuesday morning when the angler called to report his catch to police.

The grenade was encased in an old, white tube sock and appeared to be submersed in the water for some time, according to officials.

The Springfield Fire Department’s bomb squad and Explosives experts from Fort Leonard Wood were called to the scene to investigate.

Army Staff Sgt. Garrett Herbert donned a Kevlar vest to pick up the device, which he described as Mark 2 pineapple grenade from the Vietnam era. Herbert says X-rays showed the pin was still in the grenade.

The grenade was being taken to Fort Leonard Wood for disposal.