The NSW government has been drawn into an alleged corruption scandal after investigators launched raids on the offices of central coast Liberal MPs Chris Spence and Darren Webber, removing computers and documents.

The raids by the Independent Commission Against Corruption are believed to be linked to allegations, revealed by Fairfax Media last year, that two staff members of NSW energy minister Chris Hartcher funnelled political donations through a front company before the 2011 state election.

NSW energy minister Chris Hartcher. Credit:Louise Kennerley

Fairfax revealed that a $5000 donation under scrutiny was made out by a building firm owned by a local businessman, Matthew Lusted, to the benefit of the Liberal party's central coast candidates.

Mr Spence was the successful candidate for the seat of The Entrance at the 2011 election and Mr Webber won the neighbouring seat of Wyong. Mr Hartcher is the MP for the Central Coast seat of Terrigal and is known to control the area for the Liberals and keep a tight rein on local political campaigns.