'Azerbaijani citizen Azizagaoglu Emin Jami...was killed during a special operation carried out by the state security service,' the service said in a December 3 statement.
It said Jami, 38, had been convicted and jailed in 2007 for joining a terrorist organization.
'Since his release earlier this year he has been planning terrorist acts in Azerbaijan,' the security service said.
The statement did not provide further details.
Based on reporting by Reuters and TASS