A stabbing in the French Quarter killed an 18-year-old Mississippi man, bringing New Orleans’ Thanksgiving holiday weekend homicide total to at least six.

Police were investigating whether Frank Boudreaux of Carriere, Miss., was in a fight when he was stabbed about 3 a.m. Sunday on or near Bourbon Street, police spokesman Garry Flot said.

Chief coroner’s investigator John Gagliano, who released Boudreaux’s identity, said his death appears to be a homicide, but the Orleans Parish coroner’s office wouldn’t classify the death until an autopsy Monday.

The coroner’s office said Boudreaux lived in Carriere, but Flot said he understood Boudreaux originally was from New Orleans and moved, possibly because of Hurricane Katrina.

The fatal stabbing came a day after three separate fatal shootings and three days after a double homicide.

The three shooting victims also were young men, aged 18, 23 and 26.

Glenn Webb, 18, of LaPlace, apparently was ambushed, Flot said. He said a 20-year-old man’s head was grazed when a gunman walked up to the car where he and Webb were sitting, and started shooting through the windows about 1 p.m. Saturday. The sedan was riddled with bullet holes; Webb was found in an alley; he died at a hospital.

“Those guys didn’t have a chance,” said John McGee, 72, who lives in the neighborhood.

Terrell Stewart, 23, of Harvey, was shot about 20 minutes later and 2 miles away from the neighborhood where Webb was killed. Stewart reportedly had drugs in one hand.

Troydell Robinson, 26 of New Orleans, was killed Saturday night in the Lower Garden District, Flot said.

Police haven’t identified motives or suspects in any of the shootings.

Meanwhile, the coroner’s office Saturday released the names of victims in a double homicide Thursday night.

Karry Daily, 30, died at the scene, with a handgun next to him, while Brian Marcelin, 37, died at Ochsner Medical Center early Friday morning, according to the coroner’s office. Both were from New Orleans and had felony convictions at Criminal District Court.

Marcelin’s court record dates back to a 1989 attempted-theft conviction. In 1990, a judge sentenced him to five years in prison for armed robbery.

Daily pleaded guilty to an armed robbery in 1995, receiving a three-year suspended prison sentence.

The group Crimestoppers is offering a cash reward for information leading to an indictment in any of the cases.