Woman kills 3, self at Maryland warehouse.

ABERDEEN, Md. – A 26-year-old woman who was working as a temporary employee at a Rite Aid warehouse near Aberdeen, Maryland, killed three people Thursday and injured three others before turning the gun on herself.

Snochia Moseley of Baltimore County was in critical condition inside the building before law enforcement officers arrived. She died at a hospital.

Harford County Sheriff Jeffrey Gahler said Moseley opened fire with a handgun, first outside the building, and then moved inside, where she fired on other employees before shooting herself. Law enforcers did not fire any shots, Gahler said.

He said investigators had not determined a motive for the shooting, which unfolded in this community 35 miles northeast of Baltimore.

Gahler called the incident “another tragic event for us here in Harford County.” In October, a machine operator at a Harford granite company shot five people at his workplace and another man at a car dealership. Three of his victims died.

Two of the victims died at the scene and a third at a hospital; the three people who were injured were expected to survive, Gahler said.

The sheriff told reporters that law enforcement officers continued to clear and search the 210,000-square-foot facility for additional victims and information.

Krystal Watson, 33, said her husband, Eric, works at the facility and told her the shooter had been arguing with somebody near a time clock after a “town hall meeting.”

“And she went off,” she said. Watson said her husband told her the shooting started in a break room.