Liberia’s new president, Joseph Boakai, was sworn into office Monday after his narrow win in a November election. Boakai, who at age 79 is the country’s oldest sitting head of state, promised to unite and rescue Africa’s oldest republic from its economic woes.

The ceremony, however, ended abruptly after Boakai, who wore traditional Liberian attire for the occasion, began to show signs of physical distress while speaking. Officials led him away from the podium after he unsuccessfully tried to continue his address.

He won a tight run-off election to defeat Liberia’s youngest-ever president, George Weah. Critics accused him of not fulfilling campaign promises to fix Liberia’s ailing economy, stamp out corruption and to ensure justice for victims of the country’s back-to-back civil wars between 1989 and 2003.