（ ）in this case were not found.
A、
The people involved
B、
The people who involved
C、
The involved people
D、
The involved people who were
【正确答案】：A
【题目解析】：
people和involve（涉及）是被动关系， 排除BC。涉及到的人：the people involved，involved做后置定语，不用the involved people，选A。句意：没有找到这起案件的涉案人员。