(CNN) -- American missiles were used in an attack that killed 55 people, including 41 civilians, in southern Yemen, Amnesty International said Monday. The human rights organization released what it said were photographs of a U.S.-manufactured cruise missile used in the December attack in the community of al-Ma'jalah, and said authorities must be held accountable. "Based on the evidence provided by these photographs, the U.S. government must disclose what role it played in the al Ma'jalah attack, and all governments involved must show what steps they took to prevent unnecessary deaths and injuries," said Philip Luther, deputy director of the organization's Middle East and North Africa program.
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Amnesty International says U.S.-made cruise missiles used in attack
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Attack killed 55 people, including 41 civilians, organization says
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Pentagon won't comment but pleased with Yemen's fight against al Qaeda
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Yemeni officials have said al Qaeda camp was target
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al Qaeda
That said, the Yemen government should be commended for dealing with the @placeholder threat in their nation.
Amnesty International
Amnesty International
It said the organization had spent months checking their contents with specialists, but teams from @placeholder had not yet been able to visit the site to verify the images.
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al Qaeda
In December, senior U.S. officials told CNN U.S. special operations forces and intelligence agencies, and their Yemeni counterparts, were working to identify potential @placeholder targets in Yemen.
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U.S.
U.S.
U.S.
Officially the @placeholder has not said it conducted previous airstrikes in Yemen, but officials have privately said the Yemeni military could not have carried out the strikes on its own.