A Washington, DC teenager accused of fatally shooting a 14-year-old boy earlier this month allegedly bragged on Instagram about the murder, which his mother watched, according to police.

FOX 5 in D.C. reported that 17-year-old Lorenzo Thompson was arrested by Metropolitan Police and charged with second-degree murder as an adult in the fatal Nov. 3 shooting of Niko Estep.

Court records state that Thompson was seen on a live stream on Instagram on Nov. 6, appearing to brag about killing the 14-year-old boy.

In the video, the report says, the accused murderer referred to Estep by his nickname and said words suggesting that he had “got him.”