Because there 's some questions about his whereabouts .

因为目前对他的下落存在一些疑问。

The development office carefully tracks my whereabouts .

校开发办一直都了解我的行踪。

This claim has since been contested , but assad 's whereabouts remain uncertain .

这种说法受到了质疑，但阿萨德的去向至今无人知晓。

The whereabouts of mr. senussi and his senior colleagues are unknown .

赛努西及其共事的高级官员依然下落不明。

Some are now free , but the whereabouts of others is unknown .

其中一些人已经被释放，但是其它被捕者的下落依旧不明。