Chesapeake, Va., police have recovered a gun believed to have been used in the fatal shooting of Bountiful missionary Morgan Young.

Detectives are now in the process of ruling out suspects and have identified several "persons of interest," officer Christine Golden said in a news release Wednesday morning.

Police are also now speculating Young, 21, and 19-year-old Greeley, Colo., missionary Joshua Heidbrink were shot because they may have witnessed a crime in progress.

Heidbrink was in stable condition Wednesday at Norfolk General Hospital in Chesapeake.

Richard Heidbrink, Joshua Heidbrink's father, told a Colorado newspaper that his son and Young witnessed a violent argument between two men. One man pulled a gun and shot the other, then fired at the missionaries.

Heidbrink, who was struck by a bullet in the neck, was able to run to a nearby nursing home and call 911.

The missionaries were visiting homes in the Deep Creek neighborhood of Chesapeake Monday night when the shooting occurred.

-- Lisa Rosetta