A shooting spree in New Orleans during a Mother’s Day parade has shocked a neighborhood near French Quarter, and police are still investigating the damage left behind.

About 400 people had turned out for the parade, including many children, when someone opened fire in the crowd. At least 19 were injured, with three people in serious condition as of this morning. Two of the injured were 10-year old children. Although cell phone footage shows the aftermath of the gunfire–shocking images of the injured laying in pools of blood–no one has come forward yet with information on the shooter or shooters.

“These kinds of incidents will not go unanswered. Somebody knows something. The way to stop this violence is for you all to help,” Mayor Mitch Landrieu said.

As of right now, it isn’t clear whether specific people were targeted for the shootings or if it was a random act of violence, but the FBI is calling it a “flare-up of street violence”. The parade was just blocks away from where the popular HBO show “Treme” is filmed.