It's been revealed that police have been forced to shoot a naked and bloodied man dead after he charged at them with a knife in Padbury overnight.

The shocking incident happened at about 10pm at a house on Macdonald Avenue.

On Monday morning Superintendent Tony Flack said the incident took place after police were called to the home by St John WA paramedics, who had earlier been called to the house to treat the 35-year-old man for suspected self inflicted stab wounds.

Sunrise correspondent Matt Tinney has the details.