1. BBCNews. (2019).London Bridge: Attacker had been convicted of terror offence.https://www.bbc.co.uk/news/uk‐50610215
2. BBCNews. (2020).Streatham attacker named as Sudesh Amman.https://www.bbc.co.uk/news/uk‐51351844
3. Understanding the terrorist mind‐set;Borum R.;FBI Law Enforcement Bulletin,2003