Prosecutors began laying out their case Friday against hip-hop star ASAP Rocky, aka Rakim Mayers, in a 2021 shooting incident in Hollywood. If convicted, Mayers faces nearly 20 years in prison.

The Los Angeles police officer took the stand on day one of the Grammy award-winning rapper’s trial, testifying as one of the first law enforcement officers to arrive on the scene of the alleged 2021 shooting incident. According to TMZ, the officer reportedly “testified about what he saw at the scene when he arrived.”

A$AP Rocky rejected a plea deal from prosecutors for allegedly assaulting a former A$AP Mob group member in 2021.