New Orleans Police Department Supt. Michael Harrison issued a stern warning Wednesday ahead of Mardi Gras parades and NBA All-Star festivities.

"Do not bring firearms to French Quarter or parades," said Harrison, who said there'll be plain-clothes officers who are specifically charged with looking for people with guns.

Said New Orleans Mayor Mitch Landrieu: "Don't bring (an illegal firearm) down here."

A "zero tolerance" policy will be in effect, officials said.

There are no credible threats of violence to Mardi Gras or the NBA All-Star game, Harrison said. The NOPD leader joined Landrieu, city council members and other officials at a news conference to announce security plans for a busy upcoming stretch of festivities in the city.

Harrison also noted Bourbon Street would be closed to traffic from 5 p.m. to 5 a.m. Friday through Monday and Feb. 22 through Mardi Gras day.

There have been a number of shootings on Bourbon Street in recent years, including a two-man gun battle early Nov. 27 in the 100 block that left a young Baton Rouge artist dead and nine other people injured on a street packed with revelers.

NOPD will be at 100 percent staffing, Harrison said, and will have help from FBI, Louisiana State Police and other officers across the state from local agencies. Law enforcement's presence will mirror what revelers see around New Year's Eve and the Sugar Bowl, Harrison said.

More information on restrictions and rules for Mardi Gras can be found at