NSW terrorism suspect to stay behind bars

A 24-year-old man arrested in counter-terrorism raids in Sydney's west will remain behind bars until his next court appearance in March.

Merrylands resident Abdullah Salihy has been charged with knowingly collecting or making a document connected with terrorism - an offence that carries a maximum penalty of 15 years in prison.

He was arrested at his home on Wednesday under a joint NSW Police and Australian Federal Police operation.

Police will allege Salihy knowingly made a document connected with the preparation for a terrorist act on police buildings and the Woolloomooloo naval base on Sydney Harbour.

Salihy did not appear at his bail hearing at Parramatta Local Court on Wednesday and did not apply for bail. It was formally refused.

He'll next appear at Central Local Court via an audiovisual link on March 2.