Akerhaug has authored the investigative journalism books '' Norsk jihad '' ( Norwegian jihad ; 2013 ) about Norwegian Islamists , and '' En norsk terrorist '' ( A Norwegian terrorist ; 2015 ) about Hassan Abdi Dhuhulow , the Norwegian perpetrator of the 2013 Westgate shopping mall attack in Kenya . Both books received good reviews in '' Dagbladet '' . He was granted 100.000 from Fritt Ord for development of the book '' Siste jul i Kairo '' ( Last Christmas in Cairo ; 2016 ) , about the persecution of Christians in the Middle East . Akerhaug is considered one of Norway 's foremost experts on Islamic extremism , and is often referred to for commentary in Norwegian media
Westgate shopping mall attack
Westgate shopping mall attack
Lars Akerhaug