Two people were killed and six others were injured in a mass shooting at an afterparty in downtown Los Angeles, authorities said.

A mass shooting in downtown Los Angeles has left two people dead and six injured in the early hours of Monday following the Hard Summer music festival, the Los Angeles Police Department confirmed to The Hollywood Reporter.

The party had been promoted across social media as an unofficial afterparty for Hard Summer, a two-day house and techno music festival that took place over the weekend at Hollywood Park. Although LAPD hasn’t formally confirmed a link, The Los Angeles Times reported that at least one event post tied the gathering to the festival.