Washington: Three police officers were killed, and several others were injured on Sunday in a shooting incident in Baton Rouge, the capital city of the US state of Louisiana. One suspect was shot dead and two other suspects might still be on the run, according to the local police. The injured police officers, who are with the Baton Rouge Police Department and East Baton Rouge Sheriff's Office, have been rushed to Our Lady of the Lake Regional Medical Center for treatment, Xinhua news agency quoted Kip Holden, mayor of Baton Rouge as saying. He did not say how many officers were wounded and how was their condition, according to the local English daily The Times-Picayune. Holden said that he was still gathering details on the total number of officers who were injured by the shooting that broke out around 9.00 a.m. local time in the city, and was unable to provide any information on the gunman or gunmen. But there are reports that one suspect was killed and possibly two more were being sought by the police. Holden described the shooting as "a nightmare" all over again in the city as two police officers shot and killed a 37-year-old black man, Alton Sterling, earlier in July, triggering a wave of protests across the nation. Louisiana Governor John Bel Edwards also condemned the shooting, saying, in a statement, that shooting was "an unspeakable and unjustified attack on all of us at a time when we need unity and healing". He promised to take measures to bring the shooters to justice. This is the second serious shooting incident that killed police officers in the country in less than two weeks after a gunman killed five police officers and hurt seven others in Dallas, a city in the US state of Texas.