A Catholic priest has been charged with child pornography offences after a raid of a Sydney presbytery.

Detectives from the Sex Crimes Squad's Child Exploitation Internet Unit (CEIU) went to the presbytery on Monday morning at about 10:45am with a search warrant.

They arrested the 56-year-old man and seized computers and storage devices for examination.

The priest was taken to The Rocks Police Station and charged with four counts of using a carriage service for child pornography.

He was granted strict bail to appear in court next month.

The CEIU is targeting internet child pornography as part of Strike Force Trawler.

Police say anyone with information about such crimes should contact Crime Stoppers on 1800 333 000.