A Ugandan military official says dozens of military army officers, including some senior ones, have been arrested over an alleged plot to overthrow long-time President Yoweri Museveni.

Army spokesman Lt. Col. Paddy Ankunda said Sunday that more officers are being held over alleged acts of subversion. One of those in detention is a colonel with Uganda's air forces. He said the officers have suspected links to an opposition lawmaker, Michael Kabaziguruka, who is being questioned by the police over similar allegations.

Kabaziguruka is a close ally of opposition leader Kizza Besigye, who was charged with treason following a disputed presidential election in February. Besigye refused to accept the official results and claimed he had won the election.

Museveni has been in power since 1986.