Officers shot dead on lunch break
Two people have shot and killed two police officers in the US city of Las Vegas, before killing another person and then shooting themselves.
The incident began in a pizza cafe at 11:30 (18:30 GMT) on Sunday, when a man and a woman shot at the two officers who were having lunch.
They then entered a Walmart shop nearby and shot one person dead, before turning their weapons on themselves.
Sheriff Doug Gillespie told a news conference: "It appears the female suspect shot the male suspect, then took her own life."
- From the section US & Canada