Three people were shot dead after a shooting inside a manufacturing facility in western Maryland, authorities said.
The incident occurred when a shooter opened fire at Columbia Machine in Smithsburg, which is located around 75 miles west of Baltimore.
The suspect was shot during a confrontation with a Maryland State Police trooper, the sheriff's office said. The shooter and the trooper were both wounded in the exchange of gunfire.
"The State Police responded, pursued the suspect, suspect fired and shot the state trooper in the shoulder, who then returned fire and shot him back," Maryland Gov. Larry Hogan said.
The incident comes in the wake of a deadly string of mass shootings in the United States.
A new poll by the ABC/Ipsos poll said 7 out of 10 people in the country prioritize laws reducing gun violence over gun rights.
Most Democrats said lawmakers should prioritize laws focused on reducing gun violence while about half of the Republican respondents said protecting the rights of gun owners is a higher priority.
The poll was conducted from June 3 to 4 as the country mourned those killed in multiple mass shootings, including 10 at a grocery store in New York 21 at an elementary school in Texas.
On Saturday, another 9 people were killed and dozens wounded in a string of mass shootings across the US.
Also on Tuesday, three people were killed and a fourth person was critically injured after a shooting in the state of Virginia.
More than 45,000 people were killed by gun violence in the United States last year, up from 43,671 in 2020 and 39,581 in 2019, according to FBI data.