Prior to the attack on FSB Mary Ann, there had been reports of possible VC infiltration within the ranks of the ARVN contingent present on Mary Ann. In one incident, a man wearing the insignia of an ARVN lieutenant inquired about the easiest way to get off the firebase because his men wanted to go fishing. He was told the easiest way in and out of the camp was the south end of the firebase. During the battle, some of the enemy gunfire seemed to come from the ARVN section of the camp. However, one U.S. soldier who was wounded and remained in the ARVN sector for the duration of the fight stated later that he never saw any ARVN firing toward US positions. The ARVN battery was located in the northern sector of the base, which was not attacked by the sappers, and this may in part account for their inaction. The 23rd Infantry Division's Inspector General (IG) team noted that the northeastern side of the base was "generally untouched, including the Battalion ammunition storage area. The actions of ARVN soldiers were no different from many U.S. soldiers in taking cover until the attack was over. The ARVN decided not to garrison the firebase after the attack and it was closed on 24 April.