Syria’s new authorities on Thursday arrested a military justice official from the government of ousted President Bashar al-Assad. The arrest of Mohammed Kanjo Hassan was confirmed by the Syrian Observatory for Human Rights one day after deadly clashes erupted in the coastal province of Tartus, an Assad stronghold, where gunmen sought to protect him. Twenty members of Kanjo Hassan’s associates were also arrested. Kanjo Hassan, who issued sentences, including death sentences, for detainees at the Saydnaya prison, is the highest-ranking official whose arrest has been announced since Assad was ousted on Dec. 8. Kanjo Hassan ran Syria’s military field court