Who is Sarmad Sultan and why is he trending on Twitter?

Sarmad Sultan , a renowned human rights activist, became top trend in Pakistan after his followers reported his “mysterious” disappearance from social media.

Followers of young history buff have expressed concern after noticing that he is “missing” from social media and his Twitter account doesn’t exist anymore.

A user , while quoting Sarmad Sultan’s family, said that he was absent from social media and his phones are switched off because his paternal aunt has died.