MADISON, Wis. (WFRV) - The Associated Press was told by a law enforcement officer working on the investigation into a school shooting that left three dead that the shooter was a 15-year-old female student. The shooting occurred late Monday morning at Abundant Life Christian School. Police said a teenage student opened fire, killing another student and a teacher. The shooter also was dead, likely by suicide, Police Chief Shon Barnes said. Responding police officers did not fire their weapons, Barnes said. The shooter was a 15-year-old female student, a law enforcement official told The Associated Press. The official was not authorized to discuss the ongoing investigation and spoke to the AP on the condition of anonymity. Investigators believe the shooter used a 9mm pistol, a law enforcement official told The Associated Press. The official spoke on the condition of anonymity because they were not authorized to discuss the ongoing investigation. The school website shows that Friday was to be the last scheduled day of classes before the holiday break. President Joe Biden, in a statement, called the shooting “shocking and unconscionable,” and urged Congress to act immediately. “From Newtown to Uvalde, Parkland to Madison, to so many other shootings that don’t receive attention -- it is unacceptable that we are unable to protect our children from this scourge of gun violence,” Biden said. “We cannot continue to accept it as normal. Every child deserves to feel safe in their class room. Students across our country should be learning how to read and write -– not having to learn how to duck and cover.” Nine public schools in Madison were locked down for a few hours after the shooting as a precaution.