(ANSA) - BELGRADE, APR 7 - The operation, which many in Budapest expected to be the final blow to the election campaign, arrived at Easter. Two backpacks containing four kilogrammes of explosives were discovered in Serbia, a few hundred metres from TurkStream, the infrastructure that brings Russian gas to Hungary, which Viktor Orban describes as "vital" for the country's security. That was enough to raise the alert "to the highest level" and reopen the accusations against rival Peter Magyar and his favourite target, Volodymyr Zelensky, with less than a week until the crucial April 12 election. The tone of the escalation is also reinforced by the highway connecting the airport to the capital, which is dotted with billboards juxtaposing Magyar and Zelensky's faces, overlaid with the ruling party's warning: "They are dangerous." Kyiv is accused of being behind the alleged gas pipeline sabotage, Hungarian Minister Peter Szijjarto claimed, following the Druzhba affair and espionage accusations, and has received immediate support from the Kremlin, which has defined the likelihood of Ukrainian involvement as "high." This claim has been "categorically" rejected by Ukraine and debunked by the opposition: it is simply a "false flag," Magyar responded, "planned" in collaboration with Moscow and Belgrade to interfere in the vote. When Orban learned about the incident, he called an emergency meeting of the National Defence Council on Easter Sunday and ordered the army to deploy. Then came the decision, announced at dawn, to travel to the border with his trusted lieutenant Szijjarto to personally inspect the infrastructure. "The situation is extremely serious," the prime minister told the cameras, echoing the precedent of the Druzhba. While the Russian crude from the pipeline damaged in January can be replaced, damage to "a more important artery" such as the one carrying Russian gas would bring the entire Hungarian economy to its knees, the prime minister warned, casting suspicion on those who "wanted to blow up" the infrastructure. (ANSA).