An alleged high-end prostitute accused of injecting heroin into a Google executive on his yacht in California and leaving him to die when he overdosed, has appeared in court on manslaughter and heroin charges.

An alleged high-end prostitute accused of injecting heroin into a Google executive on his yacht in California and leaving him to die when he overdosed, has appeared in court on manslaughter and heroin charges.

Recordings of emergency calls as a gunman rampaged through a fast-food restaurant captured the screams, moans and chaos after he murdered a paramedic and fired at terror-stricken customers.