In another case of mass shooting in the United States, a woman opened fire with a handgun on Thursday at the warehouse where she worked in Maryland, killing three people and wounding another three, police said.
The suspect — a 26-year-old who was not identified — died after shooting herself in the head, Harford County Sheriff Jeff Gahler told reporters.
Gahler said the assailant was a temporary employee at the distribution center for the Rite Aid drugstore chain in Aberdeen, Maryland.
“We do not have a motive for this senseless crime,” he said, but terrorism did not appear likely.
The sheriff said the three wounded victims were hospitalised and were expected to survive.
Gahler said the suspect lived in Baltimore County and the handgun she used in the attack, a 9mm Glock, was registered under her name.
The woman turned up for work around 9:00 am (1300 GMT) and the shooting began just minutes later, with people inside and outside the Rite Aid warehouse.
Police responded within five minutes to reports of gunfire but Gahler said no shots were fired by law enforcement.
“We got completely bombarded by — I’m not exaggerating — 20-30 cops, and then ambulances and everything started pouring in,” a witness told WBAL-TV.
The incident is the latest in an epidemic of gun violence that has struck schools and workplaces across the United States.
Attacks by women are extremely rare, however, accounting for less than five percent of the total, according to law enforcement officials and academics.