Operation Cahaya

Operation Cahaya
	Part of Indonesian occupation of East Timor
Date	6 April – 31 December 1978
Location	Matebian, East Timor
Result	Indonesian victory;
Belligerents
Indonesia	FRETILIN
Commanders and leaders
Mohammad Jusuf	Nicolau dos Reis Lobato †; Alarico Fernandes
Units involved
ABRI Kostrad 744th Infantry Battalion; 700th Infantry Battalion; 401st Infantry Battalion; ; Kopassus Team-28; ; ;	FALINTIL
Strength
5 OV-10 Bronco; 3 F-5; 2 A-4 Skyhawk; 13 Battalions from Kostrad	Thousands of soldiers
Casualties and losses
Unknown	Hundreds of soldiers were killed
	Many of the civilians killed by the bombing

Operation Cahaya was a military operation launched by Indonesia to capture many Fretilin top leaders and attack Fretilin's primary base on Mount Matebian. This operation is also known as the last larger Indonesian offensive attack in East Timor, after Operation Seroja and Battle of Dili. The operation resulted in the ambush and assassination of Nicolau Lobato, the surrender of Fretilin leaders, and the primary base on Mount Matebian were captured by Indonesian forces and ended the invasion of East Timor.