Published: Feb 19, 2012 12:46 AM EST

ST. PETERSBURG, Fla. (AP) - Authorities say a Florida pastor's daughter who was accidentally shot in the head in a church died Saturday at a hospital.

The Pinellas County Sheriff's Office says 20-year-old Hannah Kelley was pronounced dead at about 10:20 a.m. Saturday at Bayfront Medical Center. An autopsy is pending.

Kelley had been hospitalized since Feb. 19, when she was struck in the head by a bullet at Grace Connection Church in St. Petersburg, where her father Tim Kelley is pastor.

Investigators have said Moises Zambrana was showing his gun in a small closet to another church member interested in buying a firearm. The St. Petersburg Times reports that the other church member, Dustin Bueller, was Hannah Kelley's fiancée.

Zambrana reportedly removed the magazine from the Ruger 9mm weapon but did not know that a round was still in the chamber. The gun went off, firing a bullet through a wall, striking Kelley in the head.

The sheriff's office says detectives are still investigating the shooting. No charges have been filed.

(Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)