NSW child porn charge over online comments

A NSW man has been arrested after allegedly sharing photos of a child online and posting sexually explicit comments.

NSW police arrested the 23-year-old at Cameron Park in the Hunter region on Thursday, after an investigation sparked by a tip-off from Australian Federal Police.

Detectives seized a mobile phone and computers from a Newcastle home, and the man was charged with using a carriage service for child pornography.

Police will allege he shared images of the child on a social networking site and took part in sexually explicit comments about the child.

The man has been granted bail and is due to appear at Belmont Local Court on April 26.