At least three Baton Rouge police officers were killed and three others injured Sunday morning, the city's mayor and the East Baton Rouge Parish Sheriff's Office said.
At least one suspect is dead. Law enforcement officials initially said they believed that two others suspects were at large, but at a news conference Sunday afternoon officials said the deceased suspect was likely the only shooter.
A senior law enforcement official said that suspect wore black fatigues and was armed with a rifle.
By 3 p.m. (CT) Sunday, state police said there was "no active shooter" situation.
Several law enforcement officials told NBC News that the man shot and killed in the shootout with police was identified as Gavin Long, of Kansas City, Missouri, born on July 17, 1987 — meaning he turned 29 on the morning of the shooting.
The attack comes less than two weeks after the fatal shooting of a black man by police sparked protests in Baton Rouge, turning the city into the latest flashpoint in the ongoing debate over law enforcement tactics.
The officers were responding to a call of shots fired when they were gunned down in an apparent "ambush" around 9 a.m. local time, said Baton Rouge Mayor Kip Holden.
Two of the officers killed were from the Baton Rouge Police Department. They were identified as Officer Montrell Jackson, 32, a 10-year veteran, and Matthew Gerald, 41, who had been serving for less than a year, officials said.
Also killed was Brad Garafola, 45, a 24-year veteran of the East Baton Rouge Sheriff's office, officials said.
"These men are husbands, fathers, sons and brothers," Sheriff Sid Gautreaux said. "We are devastated to lose one of our own, and another is now in a fight for his life. We are asking for your prayers at this time. We will get through this together as a family and as a community."
A 41-year-old Baton Rouge police officer suffered non-life threatening injuries, while two East Baton Rouge Sheriff's Office Deputies, aged 41 and 51, were injured. The 41-year-old was in critical condition, and "absolutely fighting for his life," said Gov. John Bel Edwards.