According to preliminary reports reaching here, the police party was ambushed when they were moving for an official task in the hilly jungle area between Rongara and Baghmara in the district.
"A 30-men strong group of suspected insurgents of the banned Garo National Liberation Army (GNLA) are suspected to have carried out the attack on the police party. While four personnel were killed in the gunfire unleashed by the militants, at least two have been injured," a senior police officer said.
The state police has pressed in an Indian Air Force (IAF) helicopter for evacuating the injured personnel while reinforcement squads including BSF troops have been sent to the spot for search operations, the official said.
Meghalaya Director General of Police (DGP) Rajiv Mehta too has rushed to the spot, he said.