Washington, July 20 : One person was killed and eight others were injured in a shooting incident in Washington D.C., police said. The shooting occurred at 14th Street and Spring Road ion Sunday, D.C. Police Chief Chief Peter Newsham said at a press briefing. He that three men, two with "long guns" and one with a pistol, opened fire on a group of people in what appeared to be a targeted attack, reports Xinhua news agency. Altogether nine people -- eight men and one woman -- were sent to a hospital, according to Newsham. Among them, one was pronounced dead, two were in serious conditions, and the rest sustained non-life threatening injuries. An investigation was underway, D.C. Police Department said in a tweet. At least 23 people have been killed in violent incidents in Washington, D.C. since July 1, according to The Washington Post. "We've got to hold gun offenders accountable," Newsham said. /IANS