in an audio message released sunday , two of its leaders , known as ustad ahmad farooq and qari abdullah mansur , were killed in cia drone strikes in january in north waziristan , near the afghan-pakistan border .
farooq 's real name was qari ubaidullah , a pakistani who oversaw suicide missions against u.s. and nato troops in afghanistan .
the creation of the terror group 's south asia branch was seen by some terrorism analysts .