Steven Andrew Larkins, 45, of Dunbar Street, Stockton, has also pleaded guilty this morning to forging a document to show he had passed a ‘‘working with children check’’ despite being deemed a ‘‘medium risk’’ by authorities in 2003.

Larkins faced Newcastle Local Court this morning and pleaded guilty to four counts of possessing child pornography relating to 30 videos and 27 images found on his iPhone, iPad, home computer and a thumb drive.

Prosecutors withdrew three further child pornography charges.

Larkins was the chief executive officer of the Hunter Aboriginal Children’s Services last year when another employee discovered a thumb drive with images on it and reported it to police.

A subsequent investigation discovered further images.

Larkins also today admitted to forging the ‘‘working with children check’’ and placing it in his personal file despite knowing that he had been classed as a ‘‘medium risk’’ by authorities.

He also pleaded guilty to using that forgery to obtain financial advantage, being the $86,000 job looking after the service which places troubled Aboriginal children into care.

Larkins has pleaded not guilty to two counts of aggravated indecent assault, relating to two alleged incidents involving young boys in 1993 and 1997.

A hearing has been set down for June 4.

He has not been required to enter a plea into eight fraud-related charges.