A 21-year-old man accused of opening fire on Mardi Gras on the St. Charles Avenue parade route and killing a man has been arrested, officials said.Eddie Dingle was booked into the Orleans Justice Center on a charge of second-degree murder, according to Sheriff's Office jail records.The shooting was reported before 5 p.m. at Second Street and St. Charles Avenue.New Orleans Police Department Superintendent Michael Harrison said a fight broke out as the parade was rolling on St. Charles Avenue. He said several citizens tried to break up the fight and gunfire went off.Police said the victim, a man who was involved in the fight, suffered multiple gunshot wounds. Dingle was identified as the man who opened fire, police said.The victim later died at a hospital.This was the second shooting reported along the parade route on Tuesday.In the Central Business District, another fight broke out around 3 p.m. and also ended in gunfire. Two people were wounded in the downtown shooting.Keep up with local news, weather and current events with the WDSU app here. Sign up for our email newsletters to get breaking news right in your inbox. Click here to sign up!