Dodgy sales practices involving tablet computers and milk powder have led a surge in corruption complaints, the ICAC said yesterday. The Independent Commission Against Corruption received 2,704 complaints in the first eight months of the year, up 11 per cent from the same period last year. Complaints against the private sector rose from 1,524 to 1,780, a 17 per cent jump. The commission arrested 24 people in June for alleged bribery, in which 13 staff members from an electrical appliances retail chain were suspected to have accepted bribes from 11 parallel goods traders and assisted them in buying tablet computers in large quantities once they became available. It also arrested 15 people in May for alleged graft over the sale of milk powder using similar methods at supermarket chains. Complaints against the Food and Environmental Hygiene Department showed a year-on-year increase from 77 last year to 136.