The two states have been at odds over the boundary for decades, but things flared up last week
In continuation of an escalation following Monday's border gunfight between their two police forces, the Indian state of Mizoram has had filed a case over the incident, naming Assamese Chief Minister Himanta Biswa Sarma and other top officials.
The decades-long tension between the two neighbouring Indian states took a serious turn on Monday, killing six Assam policemen. At least 45 others were injured during the brawl.
A first information report (FIR) was filed under several sections of the Indian Penal Code, including "attempt to murder", at the Vairengte Police Station in Kolasib district of Mizoram, which borders Assam's Cachar, reports NDTV.
Mizoram authorities revealed the matter on Friday.
The FIR read Assam police personnel, acting under instructions from Sarma himself, refused to have an "amicable dialogue" with the Mizoram police on the day of the incident.
They "forcefully informed SP, Kolasib that the area falls within Assam territory and they intended to construct a camp as per the instruction of Chief Minister, Assam himself", the FIR said.
"They had arrived at the spot with tents and other materials for construction of camp which clearly showed their intention to forcibly occupy the Mizoram BOP by force, as their convoy of vehicles consist of Ambulances and around 20 vehicles," it said.
Among the policemen mentioned in it are an Assam Inspector General, a Deputy Inspector General, a Superintendent of Police. The Cachar District Deputy Commissioner, too, has been included, besides some 200 unnamed police personnel.
The officers have been asked to appear at Vairengte Police Station on August 1.
The Mizoram Police issued notice for appearance to six Assam senior officials the same day Assam Police issued summons to Mizoram officials and another to the Rajya Sabha MP from Mizoram, K Vanlalvena in New Delhi in connection with the Monday clash between the two state police forces.
On Thursday, Assam advised its people not to travel to Mizoram warning that any threat to their personal safety cannot be accepted.
Later in the day, Assam government through another notification said all vehicles entering the state from Mizoram will be checked for "illicit drugs".
The two states have been at odds over the boundary for decades, but things flared up last week.
On Monday, violence broke out in the border area between these two districts, with each side accusing the other of causing the violence.
Also Read - Assamese people asked not to travel to Mizoram
The clash flared up over an alleged construction by Mizoram in the disputed 198-square-mile stretch on the inter-state border -- Lailapur under Dhalai of Cachar district in southern Assam and Vairengte in Kolasib district of northern Mizoram.
An uneasy calm prevails over the violence-hit areas now, following appeals by Chief Ministers of both the states to Union Home Minister Amit Shah.
The Central Reserve Police Force has increased its deployment in these regions, with five companies (total of 500 troops) standing between the police forces of Assam and Mizoram.
Two more companies are on a standby.
An all-party delegation of Assam assembly is preparing to visit the border areas and the site of Monday's violence.