https://bf4db.com/player/1190213909
This player flagged as a clean, but he is not
http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/1144154165787770752/1190213909/

in this report, he achieved 99 headshot in 167kill although he use AWS

also he banned on PBBANS

https://www.pbbans.com/mbi-view-ban-421832.html

his violation is VIOLATION (AIMBOT) 59144

If you google this violation number,you'll find a lot of guys are crying in public cheat forums
So this violation seems valid one

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/1149191519733504960/1190213909/ (75% hsk with aek and top on the scoreboard)

http://battlelog.battlefield.com/bf4/ja/battlereport/show/1/1148942598922064384/1190213909/ (27 headshots with shotgun)

blatant now

Thanks for notifying !