Deputy Inspector General of Police of Northern Range L T Hrangchal said R L Pianmawia, chairman of the Mizoram Assembly Committee on Government Assurances, and two other members - Lalthanliana and lone woman MLA Vanlalawmpuii Chawngthu, accompanied by assembly officials were on an official tour to the area when the attack took place around 8.30 am.
While the three legislators and other officials were reported to have been safe, detailed information were being awaited, Hrangchal said.
Aizawl district SP C Laldina and police reinforcements were rushed to the site of the ambush, Hrangchal added.