On 21 December 1975, he led the six-person team (which included Gabriele Kröcher-Tiedemann) that attacked the meeting of OPEC leaders; they took more than 60 hostages and killed three: an Austrian policeman, an Iraqi OPEC employee and a member of the Libyan delegation. Carlos demanded that the Austrian authorities read a communiqué about the Palestinian cause on Austrian radio and television networks every two hours. To avoid the threatened execution of a hostage every 15 minutes, the Austrian government agreed and the communiqué was broadcast as demanded.
On 22 December, the government provided the PFLP and 42 hostages an airplane and flew them to Algiers, as demanded for the hostages' release. Ex-Royal Navy pilot Neville Atkinson, at that time the personal pilot for Libya's leader Muammar al-Gaddafi, flew Carlos and a number of others, including Hans-Joachim Klein, a supporter of the imprisoned Red Army Faction and a member of the Revolutionary Cells, and Gabriele Kröcher-Tiedemann, from Algiers.
President Ford signs the Energy Policy and Conservation Act (EPCA) effective February 1976. Authorizes the establishment of the Strategic Petroleum Reserve (SPR), participation in the International Energy Program, and oil price regulation.