SEQUIM — A 22-year-old Sequim man was held today in Clallam County jail for investigation of second-degree reckless endangerment and possession of a stolen firearm in connection with the accidental shooting of his girlfriend, who was with their 1-month-old child at the time.

Arrested early Sunday morning was Mark Andrew Tierney, who investigators said was showing off a .40-caliber, semiautomatic handgun he thought was empty when it discharged in their apartment at 703 E. Washington St.

The bullet struck his girlfriend, Ashlye Wasnock, 21, in the right knee.

Detective Sgt. Sean Madison said their baby was about 3 feet away at the time of the shooting around 5 p.m. and was unhurt.

“She was very, very lucky,” Madison said of Wasnock. “The bullet went through. It was a flesh wound.”

Wasnock was transported by ambulance to Olympic Medical Center in Port Angeles, where she was treated Sunday evening and released.

The child was placed in the protective custody of the maternal grandparents, Madison said.