In what may be the initial lead from KPK investigators, Lukas Enembe last week was accused by the Corruption Eradication Commission (KPK) of taking Rp 1 billion ($64,409) from a construction firm for multi-year concessions that included a road and facilities at a preschool.
He has denied the allegations.
Lukas Enembe is a prominent local politician, who has strong support from the locals.
He has locked horns with the central government over its policies in the special autonomous region.
"We sent an official summons letter properly and legitimately to the person (Lukas Enembe) several days ago. We have announced it to the public," Fikri said, as quoted by the government-owned news agency ANTARA.
A request for medical treatment in Singapura
"With regards to the narratives of being sick and the documents sent officially about the suspect's health, once again, we do not immediately believe it," said Ali Fikri, adding that KPK has sent a medical expert team to meet the governor.
Tensions have boiled for decades