SYDNEY: Two people are dead after a shooting outside police headquarters in Parramatta.

A witness says a man dressed in a black cloak opened fire on police and security guards 

It’s alleged one of the victims is a public servant, believed to be a computer technician working for New South Wales police. 

The gunman was then shot by police.

A man called Nathan told 2GB Radio he saw a man lying on the street surrounded by blood.

‘I saw the guy dressed in black on the pavement with blood everywhere,’ he said.