Louisiana expands first-degree murder law after Mall of Louisiana shootingBATON ROUGE — A new Louisiana law is now in effect that adds changes to the state’s definition of first-degree murder. It aims to create tougher penalties for gang-related shootings in public places following the deadly shooting at the Mall of Louisiana earlier this year. After the April shooting at the Mall of Louisiana, which injured five people and killed 17-year-old Martha Odom, Wiley said Gov. The amendment expands Louisiana’s first-degree murder law to include killings that occur during gang-related violence or shootings in public venues. The new law also expands the definition of first-degree murder to include killings committed by offenders who are out on bail, probation or parole at the time of the crime.