Update (3:45 p.m.) Police have taken 27 year old Grover Cannon into custody.
Update (10 a.m.) Police have identified the fallen officer as Officer Thomas LaValley. LaValley had served with SPD since 2011. Authorities also stated they are looking for a suspect. He's been identified as 27 year old Grover Cannon, of Shreveport.
Original story: Police in northwest Louisiana say an officer has died after being shot while on duty, and a manhunt for a suspect is under way.
Shreveport police spokesman Bill Goodin tells The Associated Press that investigators believe they know who the suspect is and are obtaining a warrant for his arrest.
Goodin says a news conference will be held later this morning to outline details of the deadly shooting and release the name of the dead officer.
Cpl. Marcus Hines said late Wednesday that the officer was shot while responding to a report of a suspicious person inside a home. Hines says an armed man was apparently inside the home, threatening to harm people.
Goodin says Shreveport police, Caddo Parish deputies, along with DeSoto Parish deputies and the state police are searching for the shooter.