At 03:00 on 4 November, Soviet tanks penetrated Budapest along the Pest side of the Danube in two thrusts: one up the Soroksári road from the south and the other down the Váci road from the north.
Thus before a single shot was fired, the Soviets had effectively split the city in half, controlled all bridgeheads, and were shielded to the rear by the wide Danube river. Armoured units crossed into Buda and at 04:25 fired the first shots at the army barracks on Budaörsi Road. Soon after, Soviet artillery and tank fire was heard in all districts of Budapest.
At 05:20 on 4 November, Imre Nagy broadcast his final plea to the nation and the world, announcing that Soviet Forces were attacking Budapest and that the Government remained at its post.
At 06:00, on 4 November, in the town of Szolnok, János Kádár proclaimed the "Hungarian Revolutionary Worker-Peasant Government". His statement declared "We must put an end to the excesses of the counter-revolutionary elements. The hour for action has sounded. We are going to defend the interest of the workers and peasants and the achievements of the people's democracy."
By 08:00 organised defense of the city evaporated after the radio station was seized, and many defenders fell back to fortified positions. During the same hour, the parliamentary guard laid down their arms, and forces under Major General K. Grebennik captured Parliament and liberated captured ministers of the Rákosi–Hegedüs government.
The radio station, Free Kossuth Rádió, stopped broadcasting at 08:07. An emergency Cabinet meeting was held in the Parliament but was attended by only three ministers. As Soviet troops arrived to occupy the building, a negotiated evacuation ensued, leaving Minister of State István Bibó as the last representative of the National Government remaining at his post. He wrote For Freedom and Truth, a stirring proclamation to the nation and the world.