The teenager who fatally shot a student at a high school in Nashville, Tennessee, livestreamed part of the incident, according to the platform he used, and he was influenced by internet content that authorities described Thursday as “harmful and objectionable.

Get all the news you need in your inbox each morning. On Wednesday, Metro Nashville Police Department spokesman Don Aaron said police received the first call to 911 at 11:11 a.m., two minutes after the 17-year-old student opened fire at the high school.

Police said a male student shot two people at the high school on Wednesday morning before turning the gun on himself.