Faye Pama Musa was killed inside his Maiduguri residence less than an hour after President Goodluck Jonathan declared a State of Emergency in Borno, Yobe and Adamawa States.
The National President of CAN, Ayo Oritsejafor, confirmed the cleric's killing.
Kenny Asaka, the spokesperson to Mr. Oritsejafor, in a brief statement described the killing as "sad."
Mr. Jonathan had before the incident slammed a state of emergency on Borno, Yobe and Adamawa States, saying it had become necessary for the Government to take extraordinary measures to restore normalcy.