Five people arrested as police raid properties across western Sydney.

Five people have been arrested in raids on properties across western Sydney this morning in relation to the fatal shooting of an employee outside NSW Police headquarters in Parramatta last week.

At 6am today more than 200 officers executed warrants at premises located in the suburbs of Guildford, Wentworthville, Merrylands and Marsfield.

Those arrested include a 16-year-old boy and an 18-year-old man from Wentworthville, two men, 22 and 24, from Merrylands, and another 22-year-old man from Marsfield.

The four men and one boy have been detained and will be taken to various police stations where they will be interviewed.

Today’s operation follows last night’s raid on the home of a Guildford teenager who allegedly used his Facebook page to threaten police.

Yesterday morning the student was stopped by police on his way to Arthur Phillip High School, the same school attended by police headquarters gunman Farhad Jabar Khalil Mohammad, in relation to alleged threatening posts on social media.

He was later charged with assaulting and intimidating police, two counts of resisting arrest and using a carriage to menace, harass and offend.

Police searched his Guildford property for more than an hour before seizing two laptops and other items from the home.

The teenager has been given strict conditional bail and will appear at a children’s court on November 9.

Farhad Jabar Khalil Mohammad shot and killed 17-year police force veteran and accountant Curtis Cheng at close range outside the NSW Police headquarters in Parramatta last Friday. He was then shot and killed by police at the scene.

This post originally appeared on ABC News. 

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