The official said that Sangbera was arrested at the airport soon after he landed from Imphal by a flight via Guwahati.
He was brought to Aizawl today.
"He was detained at the Aizawl Police Station for interrogation and was booked under relevant sections of the IPC and other laws," the official said.
Sangbera (65) joined the Hmar militant group in 2007 when there was a vacuum in the leadership of the HPC-D as the then President Lalhmingthanga Sanate was found to be losing interest in guerrilla warfare.
He became more powerful after misunderstanding between leaders of the outfit due to signing of agreement with the Kuki outfit in Manipur which Sangbera's faction rejected.
Earlier, on June 10, Lalropuia and Biaknunga, 'Army Chief' and 'Deputy Army Chief' respectively of the HPC-D were arrested in Silchar Airport in Assam's Cachar district by the Mizoram Police.