A week after the insurgent proclamation of a republic, government troops moved in. Meanwhile, President Micombero declared martial law on May 30 and asked Zairean President Mobutu Sese Seko for assistance. Congolese paratroopers were deployed to secure the airport while the Burundi army moved into the countryside. Africanist René Lemarchand notes, "What followed was not so much a repression as a hideous slaughter of Hutu civilians. The carnage went on unabated through the month of August. By then virtually every educated Hutu element, down to secondary school students, was either dead or in flight."