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

Two people were killed and six others were wounded at a warehouse party in downtown Los Angeles early Monday, the latest incident to turn violent stemming from unsanctioned gatherings in the area, authorities said.

A chilling wave of gun violence struck the United States as mass shootings unfolded in Los Angeles and Montana within days of each other. In downtown LA, a party turned deadly when gunfire erupted around 1 a.