The U.S. military says guards have clashed with prisoners amid a hunger strike at Guantanamo Bay, leading officers to move detainees from communal to single cells at Camp 6.

Guantanamo Bay detention center (Mandel Ngan-Pool/Getty Images)

The military accuses detainees of covering surveillance cameras, windows and partitions, preventing guards from observing them during a hunger strike that has dragged on for more than two months. Lawyers have alleged that most of the 166 prisoners are participating.

The U.S. military said in a statement Saturday that detainees used improvised weapons to resist the transfer, leading guards to fire four less-than-lethal rounds. Officials said no guards or detainees were seriously injured.

The military also said that medical personnel have evaluated each detainee.

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