HARI SREENIVASAN, PBS NEWSHOUR WEEKEND ANCHOR:

The U.S. military said Thursday it carried out an air-strike in Yemen that killed the leader of al Qaeda in the Arabian Peninsula. The attack is a reminder of the ongoing U.S. counterterrorism operations there in coordination with the government of Yemen and allies like Saudi Arabia and the United Arab Emirates.

At the same time, an "Associated Press" investigation has found hundreds of men captured in the hunt for al-Qaeda militants in Yemen have been detained in Yemeni and UAE-run prisons, where there are allegations of human rights abuses and torture.

"A.P." reporter Maggie Michael wrote the story and she joins me now via Skype from Cairo.

So, Maggie, tell us. What's happening in these prisons?