Ko Ye Zaw's brother said the ANP member was receiving medical treatment under guard at the Sittwe Hospital for injuries he received in custody.
The body was found on Sunday, after a clash between police and unknown gunmen last week.
Youth group demands release of Arakan lawmaker, scholar during Suu Kyi’s visit
Some new structures also planned for members of Arakanese community, official says
ICRC failing to provide humanitarian assistance to non-Muslim minorities in Rakhine, protesters say.