Security upped at NSW police stations

Security will be tightened at NSW police stations considered high-risk targets following the fatal shooting outside Parramatta police headquarters earlier this month.

Multimillion dollar upgrades are expected to get underway within months and will include perimeter fencing, fortified security screens, remote-door access and CCTV, News Corp has reported.

Stations across the state will be upgraded but the focus will be on Sydney stations, said Pat Gooley, vice president of NSW Police Association.

Officers across metropolitan Sydney will be directed not to work alone at night, Mr Gooley said.

"We have worked with the commissioner, the premier and the minister to ensure police stations, particularly in Sydney but across NSW are safe for our members and are not vulnerable for attack," he told ABC radio.

"It is about making sure police are safe so that they can keep the community safe."

The new measures come after the execution-style murder of police worker Curtis Cheng on October 2.

Mr Gooley declined to reveal which stations are considered high-risk because it could increase the threat to officers.