Abu Sayyaf is an extremist group based in and round Jolo and Basilan islands in the southwestern part of Philippines. This group follows the Wahhabi doctrine of Sunni Islam. It had had pledged its allegiance to the Islamic State in 2014. It is estimated to have 60 to 70 members as of this year. Three members of this extremist group were killed recently by the Malaysian police in the state of Sabah on the Malaysian portion of Borneo.