I n July 1998, several people attending a summer fes-tival in western Japan died after eating curry that was spiked with arsenite. This poisoning was fol-lowed by a series of similar incidents in other local districts, including a case of green tea laced with sodium azide and oolong tea containing cyanide. J a p a n 's National Police Agency (NPA) d e t e r m i n e d that the local forensic laboratories needed new ana-lytical instrumentation that could detect toxins more quickly and at the low levels often present in adulter-ated foods and beverages. On December 25, 1998, the NPA p u rchased 14 different analytical instru-ments (including a GC-MS, LC-MS, capillary electro-phoresis [CE] system, and ion chromatography [IC] system) for 51 forensic science laboratories. IC is a popular analytical technique for ion anal-ysis. Some chromatographic papers examine the sep-aration of forensic anions. Arsenite and arsenate are analyzed by ion exclusion chromatography with a UV detector, 1 anion-exchange chromatography with an atomic absorption (AA) spectrometer, 2 or induc-tively coupled plasma-mass spectrometry (ICP-MS). 3,4 Azide is analyzed using an anion-exchange column with conductivity detection 5 or ion exclusion chro-matography with UV detection. 1 Cyanide, however, is commonly determined by anion-exchange chro-matography with electrochemical detection. 6 – 8 S i n c e the separation columns, eluents, and detectors are different for these forensic anion analyses, at least two analytical methods are necessary. Therefore, IC is not the most suitable technique for forensic anion screening. In addition, IC needs long analysis times to analyze foods and beverages that contain a large number of matrix compounds since subsequent sam-ples cannot be injected until all compounds from the previous run elute from the column. Therefore, a rapid and simple simultaneous analysis technique for forensic anions could be very successful. Capillary electrophoresis is a powerful new separa-tion technique that can provide high-resolution effi-c i e n c y, and it is becoming a standard tool for the analysis of many ionic compounds. 9–12 Recently, sev-eral CE methods for the analysis of forensic anions such as arsenate, 1 3 , 1 4 a r s e n i t e , 1 3 , 1 4 c y a n i d e , 1 5 , 1 6 a n d azide 9,10 have been described. The aim of this work was to establish a CE m e t h o d for the simultaneous determination of forensic anions as well as other anions in foods and beverages. The au-thors previously proposed a capillary zone electro-phoresis (CZE) method with indirect UV detection for the simultaneous analysis of inorganic anions, organic acids, amino acids, and carbohydrates. 1 7 The method was modified and applied successfully to the simulta-neous analysis of cyanide, selenate, arsenate, and azide in adulterated food and beverage samples.