onitsha nigeria police nigeria southern delta state say kill one suspect arrest two others accuse involvement kidnap last month four britons three british hostages take gunmen oct. 13 release early week negotiations fourth ian squire kill delta state police spokesman andrew aniamaka say officer arrest two suspect kill third open fire wound two officer aniamaka say two suspect arrest previously lead police three men kidnap ransom common part nigeria include delta region produce bulk country crude oil mire poverty plague criminal militant activity nigerian police kill one arrest two suspect british kidnap