Are these reports reliable?
Al-Fajr Media Center has official contractual partnerships with the As-Sahab Media Foundation, Al-Qaida's "Islamic State of Iraq" (ISI), Al-Qaida in the Arabian Peninsula (Yemen), Al-Qaida in the Islamic Maghreb (AQIM), Ansar al-Islam in Iraq, and the Islam Awazi Information Center (the media wing of the Turkestan Islamic Party).
They are considered very reliable and are reported through SITE and NEFA.
They are solid and have never announced "martyrdoms" in error.
Could be an inside job? Maybe somebody ain't ordering pizzas anymore?
Often, the confirmation of a hit is not the body, but the sudden absence of (tracked) communication and the internal communications of their associates.
Al-Fajr steps up right away because they need to tell the target's associates to duck.