对狱内又犯罪案件应明确规定侦查期限张凤华笔者在办理狱内又犯罪案件时发现，有的又犯罪嫌疑人被禁闭关押（指监狱立案侦查后）少则半年，多则一年甚至更长。据查，其他监所检察机关亦发现此类现象。究其原因，一是监狱侦查机关办案效率低；二是法律没有明文规定狱内又犯... Criminal cases of crimes in prison should be clearly defined investigation period Zhang Fenghua author in dealing with criminal cases and found that some prisoners were detained in detention (referring to the investigation of prisons) as little as six months, as many as a year or more . According to the investigation, other prison prosecutors also found such phenomena. The reason, first, the investigating agency of the prison investigators inefficient; Second, the law does not expressly provide prison and committed ...