Security forces re-entered the Samarian Palestinian Authority village of Ein Arik on Sunday evening in order to carry out further searches, following the arrest of two Hamas terrorists Friday night in connection with the afternoon explosion that killed 17-year-old Rina Shnerb of Lod and wounded her father and brother. Channel 12 News reported that the roadside charge was particularly heavy: three pounds of explosive hidden behind a rock, at an angle intended to maximize injury.