Karachi, Pakistan ? Pakistani intelligence agents hunted Wednesday for the graves of four al-Qaida militants believed killed in an airstrike near the Afghan border – including one authorities suspect was a high-ranking al-Qaida figure.

ABC News reported that a master bomb maker and chemical weapons expert for al-Qaida was killed in the attack on the village of Damadola last week. He was identified as Midhat Mursi, also known as Abu Khabab al-Masri, who ran an al-Qaida training camp and has a $5 million reward on his head.