enz uela ▁Lo y ola ) ▁on ▁ 2 8 ▁December ▁ 1 9 8 3 . ▁ ▁On ▁ 3 1 ▁March ▁ 1 9 8 4 , ▁a ▁police ▁bus ▁in ▁dow nt own ▁Santiago ▁was ▁destroyed ▁with ▁a ▁bomb , ▁killing ▁a ▁car ab in ero ▁and ▁inj uring ▁at ▁least ▁ 1 1 . ▁On ▁ 2 9 ▁April ▁ 1 9 8 4 , ▁M IR ▁gu err illas ▁expl oded ▁ 1 1 ▁bomb s , ▁der ail ing ▁a ▁sub way ▁train ▁in ▁Santiago ▁and ▁inj uring ▁ 2 2 ▁passengers , ▁including ▁seven ▁children . ▁On ▁ 5 ▁September ▁ 1 9 8 4 , ▁gu err illas ▁shot ▁and ▁killed ▁ 2 7 - year - old ▁army ▁lieutenant ▁Jul io ▁Br iones ▁Ray o ▁in ▁Cop ia p ó ▁in ▁northern ▁Chile . ▁On ▁ 2 ▁November ▁ 1 9 8 4 , ▁a ▁bus ▁carrying ▁car ab iner os ▁was ▁attacked ▁with ▁a ▁gr en ade ▁during ▁Chile ' s ▁national ▁cy cling ▁championship ; ▁four ▁car ab iner os ▁were ▁killed . ▁On ▁ 4 ▁November ▁ 1 9 8 4 , ▁five ▁gu err illas ▁r iding ▁in ▁a ▁van ▁hur led ▁bomb s ▁and ▁fired ▁automatic ▁weapons ▁at ▁a ▁sub urban ▁Santiago ▁police ▁station , ▁killing ▁two ▁car ab iner os ▁and ▁wounded ▁three ▁more . ▁On ▁ 7 ▁December ▁ 1 9 8 4 , ▁urban ▁gu err illas ▁killed ▁a ▁polic eman ▁and ▁bom bed ▁a ▁sub