Complaints against police for neglect of duty were 20 per cent higher in the first 11 months this year than for the whole of last year. The rise, and a surge in assault complaints last month, aroused concern from members of the Independent Police Complaints Council yesterday. But the latest police figures showed the overall total of 2,699 complaints against the force in the first 11 months was lower than the 2,717 cases in the same period last year and 3,038 in 1996. The sharpest rise this year was seen in complaints against officers for neglecting their duties, which produced 689 cases - 20 per cent more than for the whole of last year. Assault cases remained the largest category of complaints with 845 received until the end of last month, accounting for 31 per cent overall. Council member Dr Conrad Lam Kui-shing and vice-chairman Bruce Liu Sing-lee raised their concerns with police yesterday.