CAIRO (AP) — An umbrella group for eastern Libya’s extremist militias announced Wednesday that it had overrun three more army bases in the eastern city of Benghazi and seized large amounts of heavy weapons, including armored vehicles, as they tightened their grip on the country’s second city.

The Benghazi Revolutionary Shura Council, composed of extremist militias like Ansar al-Shariah, posted pictures of its leaders posing in front of tanks, multiple rocket launchers, and artillery they claimed to have seized from the bases they overran.