December 8, 2012. The Pittsburgh Tribune-Review reported that Loughrey told police he had emptied the magazine of his 9-millimeter Taurus handgun, and he didn’t know there was a bullet in the chamber. The gun discharged and his son was struck in the chest.

February 13, 2012. Authorities in St. Petersburg, Fla. say the daughter of a pastor was accidentally killed at church Sunday when a gun went off. Investigators say a man was showing his gun to another church member interested in buying it, but didn’t know there was a bullet in the chamber. The gun went off and fired through a wall at Grace Connection Church, striking 20-year-old Hannah Kelley in the head.

December 11, 2009. Asked by the judge why he pulled the trigger, Airman Hernandez said, "I trusted him; I’d seen him doing it earlier that night, and I trusted him. Even though I saw him load (the gun), I didn’t know there was a bullet in the chamber."

December 31, 2006. He didn’t know there was a bullet in the chamber of his .45-caliber semiautomatic handgun when investigators say he pointed the weapon at his friend’s head.

September 8, 2006. “It was my fault,” Robert Christie told the neighbors, according to a sheriff’s report. “I didn’t know there was a bullet in the chamber.”

October 16, 1998. “She was chiding him in her discussion with a friend,” Givens told Wagner. “He didn’t know there was a bullet in the chamber and pulled the trigger.”

September 9, 1994. Steinberg said Cruz recklessly pointed the gun at his brother after ejecting the clip and didn’t know there was a bullet in the chamber.

February 15, 1988. Defense lawyers claim that Matthews didn’t know there was a bullet in the chamber of the .380-caliber handgun.

March 10, 1971. He told police he had removed the ammunition clip from the pistol and didn’t know there was a bullet in the chamber when he pointed the gun at the girl.