Between 11–12 October 1997, Angolan air force fighter jets conducted a number of air strikes on Cocoye positions within Brazzaville. On 16 October 1997 Cobra militia supported by tanks and a force of 1,000 Angolan troops cemented their control of Brazzaville, having ousted Lissouba two days earlier. Denis Sassou Nguesso assumed power on the following day, declaring himself president. He effectively incorporated the Cobra militia into the national army, without fully disbanding them. After capturing the capital, Cobra militiamen spread out over the city, detaining and executing dozens of enemy combatants and political opponents and looting their property. A parallel Angolan offensive on Pointe-Noire met with little resistance, as the majority of government troops surrendered.