One person was killed and at least one was injured during a shooting at a Washington state grocery store at about 11 a.m. Monday, authorities said.

The suspect, who is believed to have a handgun, is still at large following the shooting at a Fred Meyer store in Richland, Washington, police told reporters.

The injured victim has been hospitalized in unknown condition.

ATF agents are heading to the scene, the agency said.

Richland is located about 200 miles southeast of Seattle.

This is a developing story. Please check back for updates.