Ali allegedly threatened to kill minister Sarma through a Fecbook post.
Aktar Ali is a resident of Hajo.
According to Hajo police, they arrested Ali on Thursday night.
He went on hiding as the police launched a search operation after an FIR was lodged against him.
Ali is currently being interrogated by Hajo Police.
“Investigation is on,” said police.
After the death threat to minister Sarma, the presidents of Uttar Hajo and Hajo Mandal BJP filed an FIR at Hajo police station against Aktar Ali.
The BJP workers demanded stringent punishment to the culprit.