Yemen's Al-Qaeda-linked Ansar al-Sharia claimed responsibility for a rocket that hit near the US embassy in Sanaa Saturday, shortly after the mission said it was unlikely the target.

"Ansar al-Sharia have targeted the US embassy in Sanaa with a (shoulder-launched) LAW rocket," the jihadist group posted on Twitter.

Earlier, the mission said on Twitter that it had "no reason to believe the US Embassy was target" of the attack.