Earlier the Associated Press also reported the death, citing Luke Somers’s sister – Lucy.
The agency said that she has learned of her brother’s death from FBI agents.
Al Jazeera also quoted the Yemeni officials as saying that Somers was taken away by air after a joint US-Yemen operation on Saturday, but they did not know if he was dead or alive.
The editor-in-chief of the Yemen Post has confirmed to Al Jazeera that Somers was no longer with Al Qaeda.
US State Department said in a statement it was "aware of conflicting reports but cannot comment at this time. We expect to be releasing a statement in the next few hours".
According to AP, Yemen’s local Al Qaeda branch, Al Qaeda in the Arabian Peninsula, posted a video Thursday showing Somers and threatening to kill him in three days if the United States didn’t meet the group’s demands, which weren’t specified.
Failing to meet the demands will end up with the hostage meeting his inevitable fate, the video said.
Somers had been held captive since last year after being snatched from the streets of Yemeni capital Sanaa.