An Iberia Parish sheriff’s deputy fatally shot a 40-year-old man early Sunday morning in New Iberia after an early morning standoff at the man’s home, Louisiana State Police said.

Shannon Labit barricaded himself inside his home at 620 McDonald St., about 1 a.m. Sunday, shortly after sheriff’s deputies responded to an altercation at another home a couple of blocks away, said Master Trooper Brooks David, a spokesman for the State Police, which is investigating the shooting.

David said Labit was apparently involved in the earlier altercation, which David described as a domestic call.

During the standoff at the McDonald Street home, Labit apparently approached deputies with a knife, David said.

“We do know that one deputy fired at least one round, striking the suspect once,” David said.

Labit was pronounced dead at a hospital, David said. No law enforcement officers were injured in the incident.

Details of what happened during the earlier domestic altercation remained unclear Sunday afternoon, though KATC-TV reported the man allegedly had stabbed two women.

David referred all questions about the altercation to the Iberia Parish Sheriff’s Office, which is investigating that incident. David said he didn’t have details about whether anyone was stabbed or injured.

Iberia Parish Sheriff Louis Ackal could not be reached Sunday and messages left at the Iberia Parish Sheriff’s Office seeking additional information weren’t returned.

Relatives of Labit said Sunday he’d suffered from mental illness and struggled with alcoholism.

“He’s somebody that had a loose tongue but never posed a physical threat to anybody,” said Jeremy Randazzo, a nephew of Labit’s.

Randazzo said his uncle’s mental issues were well-known to local law enforcement officers

David said State Police detectives are still trying to determine how many shots were fired during the incident. He said the Sheriff’s Office would have to address questions about how many deputies were present when Labit was shot.

David declined to say whether any deputies were wearing body cameras or whether other video footage of the incident exists, citing the ongoing investigation.

The Sheriff’s Office began using body cameras in 2015.

Follow Bryn Stole on Twitter, @BrynStole.