The lead T-54 was hit by M67 recoilless rifle and then the next T-54 was hit by a shell from an M48 tank. The PAVN infantry moved forward and engaged the ARVN in house to house fighting forcing them to withdraw to the base by 08:45. The PAVN then sent three tanks and an infantry battalion to assault the main gate and they were met by intensive anti-tank and machine gun fire knocking out the three tanks and killing at least twenty PAVN soldiers. The PAVN tried to bring forward an 85mm antiaircraft gun but the ARVN knocked it out before it could start firing. The PAVN 10th Division ordered eight more tanks and another infantry battalion to join the attack, but as they approached the Bay Hien intersection they were hit by an airstrike from RVNAF jets operating from Binh Thuy Air Base which destroyed two T-54s. The six surviving tanks arrived at the main gate at 10:00 and began their attack, with two being knocked out by antitank fire in front of the gate and another destroyed as it attempted a flanking manoeuvre. At 10:24, Minh announced an unconditional surrender. He ordered all ARVN troops "to cease hostilities in calm and to stay where they are", while inviting the Provisional Revolutionary Government to engage in "a ceremony of orderly transfer of power so as to avoid any unnecessary bloodshed in the population." At approximately 10:30 Major Pham at Tan Son Nhut Air Base heard of the surrender broadcast of President Minh and went to the ARVN Joint General Staff Compound to seek instructions. He called General Minh who told him to prepare to surrender. Pham reportedly told Minh, "If Viet Cong tanks are entering Independence Palace we will come down there to rescue you, sir." Minh refused Pham's suggestion and Pham then told his men to withdraw from the base gates. At 11:30 the PAVN entered the base. At Newport Bridge the ARVN and PAVN continued to exchange tank and artillery fire until the ARVN commander received President Minh's capitulation order over the radio. While the bridge was rigged with approximately 4000lbs of demolition charges, the ARVN stood down and at 10:30 the PAVN column crossed the bridge. Capitulation and final surrender announcement PAVN 203rd Tank Brigade (from 2nd Corps of Major general Nguyễn Hữu An) under the command of Commander Nguyễn Tất Tài and Political Commissar Bùi