4 people killed as gunman opens fire at Halloween party in California

Four people have died and others wounded when gunfire erupted at a large Halloween party outside an Orinda home late on Thursday night.

Orinda police confirmed early on Friday, November 1, that four people died in the shooting outside a large home on a quiet street nestled in the Orinda Hills.

Video from the scene posted by KGO-TV showed multiple patients being loaded into ambulances as others limped away from the scene.

According to the Orinda Police Chief, David Cook "We are still investigating the scene".