A manhunt is underway for a "person of interest" believed to be involved in a double shooting that killed one and wounded another early Saturday in Ascension Parish and another that injured two hours prior in Livingston Parish.

Louisiana State Police say the man then exchanged gunfire with a trooper after refusing to pull over before leading them on a high-speed chase to southeastern Baton Rouge, where he hopped out of his truck and fled on foot.

LSP described the person as White, male, clad in camouflage, "armed and dangerous."

Authorities asked people to avoid the area around Hoo Shoo Too Road off Jefferson Highway — where the gunman fled from Tiger Bend Bridge and into a tree line by a residential neighborhood — and to call 911 if they see anything suspicious. 

The East Baton Rouge Sheriff's Office is providing air support and a K9 unit to help the search, which LSP said was focused on "a wooded area" by a residential neighborhood.

By late morning, several hours after the shooting, more officers were arriving to join the manhunt.

Spokesman Trooper First Class Taylor Scrantz said the officer who exchanged gunfire is being evaluated at a local hospital but appears to be in stable condition.

He said it's unclear how many shots were fired.

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LSP announced the shooting and search in a news release Saturday morning.

He said troopers tried to stop a blue Chevrolet Silverado shortly after 5 a.m. on La. 42. 

"The driver refused to stop and shot at the trooper," Scrantz said. "The trooper returned fire and the pursuit continued."

The gunman proceeded down Jefferson Highway to Hoo Shoo Too Road, where the two exchanged fire again, Scrantz said.

The suspect then fled the scene at the Tiger Bend Bridge.

"We believe the suspect is in the area and is considered armed and dangerous," Scrantz said. "As the investigation develops, the circumstances of the incident and additional suspect information will be immediately released for public safety."

Can't see the press conference below? Click here.

This post will be updated as more information becomes available. 

Email Lea Skene at lskene@theadvocate.com.