The 4th Regiment also carried out patrolling, and on the night of 6–7 June, Corporal Oscar Nicolás Albornoz-Guevara along with eight conscripts (including Private Orlando Héctor Stella, his pathfinder) from "Subteniente" Miguel Mosquera-Gutierrez's 1st Platoon crossed Murrell River and reached the area of Estancia Mountain where they detected a number of British vehicles, but the patrol soon came under mortar fire from 3 PARA and had to withdraw.