The closure boundaries started in three directions: Assistance personnel in closing the operational area involving Hansip, Wanra and the people carrying out village patrols.

Apart from that, it was also hoped that the closure would isolate the Southern region and prevent external assistance from being provided to the PKI in South Blitar.

The operational area is closed day and night and only a few access corridors have been created, but they remain under strict supervision by officers.

The results of the search were submitted to the Commander of the Trisula Task Force on May 28, 1968, for discussion and as guidance in taking operational action in the field.

Kodam VIII/Brawijaya as the executor has full authority to coordinate all regular infantry units in carrying out the main operational tasks.