Three people killed and two injured as woman goes on shooting rampage in Maryland 10 months ago

Three people killed and two injured as woman goes on shooting rampage in Maryland

The gunner opened fire at a US business park

A shooter has killed three people and wounded two others at a drugstore distribution centre in Harford County, Maryland.

Roughy 1,000 people work at the Rite Aid support facility, but the area is now believed to be secure.

"The distribution centre is where products are received and processed for delivery," Rite Aid spokeswoman Susan Henderson said.

"This is part of a large facility that is a distribution center. The shooting happened adjacent to the primary building."

It is believed the gunman opened fire around 9am Eastern Time (2pm GMT).

The distribution centre is located outside the City of Perryman, roughly 30 miles northeast of Baltimore.

"We are closely monitoring the horrific shooting," Gov. Larry Hogan tweeted. "Our prayers are with all those impacted, including our first responders. The State stands ready to offer any support."