Corruption investigators raided Labor party offices in Sydney on Tuesday, reportedly seeking documents related to a lobbying group with deep connections to China.

Around lunchtime, officials entered the offices of the state branch of Labor Party, which is currently holding its national conference in Adelaide. Senior party officers are all attending the conference.

The Australian reports Independent Commission Against Corruption (ICAC) officers swept the NSW Labor Party’s Sussex Street headquarters as part of an investigation into ALP donations.

Corruption investigators raided Labor party offices in Sydney on Tuesday, with local media suggesting they were seeking documents relating to a lobbying group with reportedly deep connections to China.

Around lunchtime, officials entered the offices of the state branch of Labor Party, which is currently holding its national conference in Adelaide. Senior party officers are all attending the conference.

The Australian reports Independent Commission Against Corruption (ICAC) officers swept the NSW Labor Party’s Sussex Street headquarters as part of an investigation into ALP donations.

It is reported that investigators were looking for financial records linked to an annual party fundraising event called the Chinese Friends of Labor.

ICAC has declined to comment on the raid.

In November last year, former Labor senator Sam Dastyari — referred to by intelligence chiefs as an "Agent of Chinese Influence" — quit politics because of a scandal that began and ended with his relationship with the Chinese businessman and political donor, Huang Xiangmo.