Global alternative asset manager The Carlyle Group has invested in Mazarine Energy, an upstream oil and gas company with existing assets in Tunisia. Carlyle will also grant Mazarine Energy access to an equity line of up to US$500 million to fund future bolt-on acquisitions, focusing on conventional exploration, development and production opportunities in Europe, Africa and the broader Mediterranean region. Financial details of the transaction, which was structured through Carlyle International Energy Partners, were not disclosed.