Teens charged over Perth knife attack

Three teenagers have been charged over a knife attack on a man in his 60s outside his Perth home, which left him needing emergency surgery.

Police say a 16-year-old girl and two boys aged 15 and 17 slashed the victim across the stomach in Falcon on Thursday afternoon.

The teens spent the night in custody after being charged with grievous bodily harm with intent and are due to face Perth Children's Court on Friday.