China has launched an investigation into Apple iPhone-maker Foxconn over tax and land use, Chinese state media reported on Sunday.

The Global Times, citing anonymous sources, said tax authorities inspected Foxconn’s sites in the provinces of Guangdong and Jiangsu, and natural resources officials had inspected sites in Henan and Hubei.

Foxconn said it would cooperate with the investigation. “Complying with laws and regulations is a basic principle for the group worldwide,” said Foxconn in a statement. “We will actively cooperate with the relevant authorities’ operations.”